12904831402 has 8 divisors (see below), whose sum is σ = 19358381700. Its totient is φ = 6452037504.

The previous prime is 12904831397. The next prime is 12904831411. The reversal of 12904831402 is 20413840921.

It can be written as a sum of positive squares in 2 ways, for example, as 11521660921 + 1383170481 = 107339^2 + 37191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144327 + ... + 215962.

Almost surely, 2^12904831402 is an apocalyptic number.

12904831402 is a deficient number, since it is larger than the sum of its proper divisors (6453550298).

12904831402 is a wasteful number, since it uses less digits than its factorization.

12904831402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378200.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 12904831402 in words is "twelve billion, nine hundred four million, eight hundred thirty-one thousand, four hundred two".