12902431 has 2 divisors, whose sum is σ = 12902432. Its totient is φ = 12902430.

The previous prime is 12902423. The next prime is 12902437. The reversal of 12902431 is 13420921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12902431 - 2³ = 12902423 is a prime.

It is a super-2 number, since 2×12902431² = 332945451419522, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12902437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6451215 + 6451216.

It is an arithmetic number, because the mean of its divisors is an integer number (6451216).

Almost surely, 2^12902431 is an apocalyptic number.

12902431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12902431 is an equidigital number, since it uses as much as digits as its factorization.

12902431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12902431 is about 3591.9954064559. The cubic root of 12902431 is about 234.5437412627.

It can be divided in two parts, 1290 and 2431, that added together give a square (3721 = 61²).

The spelling of 12902431 in words is "twelve million, nine hundred two thousand, four hundred thirty-one".