31212613425 has 48 divisors (see below), whose sum is σ = 59001620480. Its totient is φ = 14262661440.

The previous prime is 31212613417. The next prime is 31212613441. The reversal of 31212613425 is 52431621213.

It is not a de Polignac number, because 31212613425 - 2³ = 31212613417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31212613392 and 31212613401.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1397496 + ... + 1419654.

Almost surely, 2^31212613425 is an apocalyptic number.

31212613425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31212613425 is a deficient number, since it is larger than the sum of its proper divisors (27789007055).

31212613425 is a wasteful number, since it uses less digits than its factorization.

31212613425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24862 (or 24857 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The spelling of 31212613425 in words is "thirty-one billion, two hundred twelve million, six hundred thirteen thousand, four hundred twenty-five".