12902531 has 4 divisors (see below), whose sum is σ = 13079352. Its totient is φ = 12725712.

The previous prime is 12902509. The next prime is 12902543. The reversal of 12902531 is 13520921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12902531 is a prime.

It is a super-2 number, since 2×12902531² = 332950612411922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12902497 and 12902506.

It is not an unprimeable number, because it can be changed into a prime (12902431) 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, 88301 + ... + 88446.

It is an arithmetic number, because the mean of its divisors is an integer number (3269838).

Almost surely, 2^12902531 is an apocalyptic number.

12902531 is a deficient number, since it is larger than the sum of its proper divisors (176821).

12902531 is an equidigital number, since it uses as much as digits as its factorization.

12902531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176820.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12902531 is about 3592.0093262685. The cubic root of 12902531 is about 234.5443472031.

The spelling of 12902531 in words is "twelve million, nine hundred two thousand, five hundred thirty-one".