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1311420301 = 4131985861
BaseRepresentation
bin100111000101010…
…1010111110001101
310101101200001110021
41032022222332031
510141210422201
6334044142141
744332613542
oct11612527615
93341601407
101311420301
11613298534
12307237951
1317b906159
14c6254bc9
157a1e8ea1
hex4e2aaf8d

1311420301 has 4 divisors (see below), whose sum is σ = 1343406204. Its totient is φ = 1279434400.

The previous prime is 1311420293. The next prime is 1311420323. The reversal of 1311420301 is 1030241131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1030241131 = 1718359957.

It can be written as a sum of positive squares in 2 ways, for example, as 308178025 + 1003242276 = 17555^2 + 31674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311420301 - 23 = 1311420293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311420101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15992890 + ... + 15992971.

It is an arithmetic number, because the mean of its divisors is an integer number (335851551).

Almost surely, 21311420301 is an apocalyptic number.

It is an amenable number.

1311420301 is a deficient number, since it is larger than the sum of its proper divisors (31985903).

1311420301 is an equidigital number, since it uses as much as digits as its factorization.

1311420301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31985902.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311420301 is about 36213.5375377772. The cubic root of 1311420301 is about 1094.5794764231.

Adding to 1311420301 its reverse (1030241131), we get a palindrome (2341661432).

The spelling of 1311420301 in words is "one billion, three hundred eleven million, four hundred twenty thousand, three hundred one".

Divisors: 1 41 31985861 1311420301