12910031428 has 24 divisors (see below), whose sum is σ = 26257694400. Its totient is φ = 5439092448.

The previous prime is 12910031423. The next prime is 12910031429. The reversal of 12910031428 is 82413001921.

It is a super-2 number, since 2×12910031428² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12910031428.

It is not an unprimeable number, because it can be changed into a prime (12910031423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3905743 + ... + 3909046.

It is an arithmetic number, because the mean of its divisors is an integer number (1094070600).

Almost surely, 2^12910031428 is an apocalyptic number.

It is an amenable number.

12910031428 is an abundant number, since it is smaller than the sum of its proper divisors (13347662972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12910031428 is a wasteful number, since it uses less digits than its factorization.

12910031428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814859 (or 7814857 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 12910031428 in words is "twelve billion, nine hundred ten million, thirty-one thousand, four hundred twenty-eight".