31312515230 has 16 divisors (see below), whose sum is σ = 56447807904. Its totient is φ = 12506054880.

The previous prime is 31312515229. The next prime is 31312515233. The reversal of 31312515230 is 3251521313.

It is a super-2 number, since 2×31312515230² (a number of 22 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 31312515230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312515233) 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, 2361962 + ... + 2375181.

It is an arithmetic number, because the mean of its divisors is an integer number (3527987994).

Almost surely, 2^31312515230 is an apocalyptic number.

31312515230 is a deficient number, since it is larger than the sum of its proper divisors (25135292674).

31312515230 is a wasteful number, since it uses less digits than its factorization.

31312515230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737811.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 31312515230 in words is "thirty-one billion, three hundred twelve million, five hundred fifteen thousand, two hundred thirty".