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2102131301 = 5387390223
BaseRepresentation
bin111110101001011…
…1111101001100101
312102111112100000212
41331102333221211
513301121200201
6544331545205
7103043551454
oct17522775145
95374470025
102102131301
119896643a6
124a7bbb205
13276685c9a
1415d282b9b
15c4838abb
hex7d4bfa65

2102131301 has 4 divisors (see below), whose sum is σ = 2102526912. Its totient is φ = 2101735692.

The previous prime is 2102131271. The next prime is 2102131313. The reversal of 2102131301 is 1031312012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102131301 - 218 = 2101869157 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 (2102131331) 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, 189725 + ... + 200498.

It is an arithmetic number, because the mean of its divisors is an integer number (525631728).

Almost surely, 22102131301 is an apocalyptic number.

It is an amenable number.

2102131301 is a deficient number, since it is larger than the sum of its proper divisors (395611).

2102131301 is an equidigital number, since it uses as much as digits as its factorization.

2102131301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395610.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2102131301 is about 45849.0054526813. The cubic root of 2102131301 is about 1281.0122406777.

Adding to 2102131301 its reverse (1031312012), we get a palindrome (3133443313).

The spelling of 2102131301 in words is "two billion, one hundred two million, one hundred thirty-one thousand, three hundred one".

Divisors: 1 5387 390223 2102131301