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2012301031 = 13154792387
BaseRepresentation
bin111011111110001…
…0100011011100111
312012020111111001211
41313330110123213
513110122113111
6531402332251
7100603163566
oct16774243347
95166444054
102012301031
11942989604
12481aba087
13260b93390
1415137bbdd
15bb9e2521
hex77f146e7

2012301031 has 4 divisors (see below), whose sum is σ = 2167093432. Its totient is φ = 1857508632.

The previous prime is 2012301029. The next prime is 2012301043. The reversal of 2012301031 is 1301032102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2012301031 - 21 = 2012301029 is a prime.

It is a super-2 number, since 2×20123010312 = 8098710878727325922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 154792387 = 2012301031 / (2 + 0 + 1 + 2 + 3 + 0 + 1 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012301091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77396181 + ... + 77396206.

It is an arithmetic number, because the mean of its divisors is an integer number (541773358).

Almost surely, 22012301031 is an apocalyptic number.

2012301031 is a deficient number, since it is larger than the sum of its proper divisors (154792401).

2012301031 is a wasteful number, since it uses less digits than its factorization.

2012301031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154792400.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2012301031 is about 44858.6784357275. The cubic root of 2012301031 is about 1262.4988268590.

Adding to 2012301031 its reverse (1301032102), we get a palindrome (3313333133).

The spelling of 2012301031 in words is "two billion, twelve million, three hundred one thousand, thirty-one".

Divisors: 1 13 154792387 2012301031