31312421310 has 32 divisors (see below), whose sum is σ = 76748746752. Its totient is φ = 8172319520.

The previous prime is 31312421291. The next prime is 31312421323. The reversal of 31312421310 is 1312421313.

It is a super-2 number, since 2×31312421310² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11102286 + ... + 11105105.

It is an arithmetic number, because the mean of its divisors is an integer number (2398398336).

Almost surely, 2^31312421310 is an apocalyptic number.

31312421310 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31312421310 is an abundant number, since it is smaller than the sum of its proper divisors (45436325442).

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

31312421310 is a wasteful number, since it uses less digits than its factorization.

31312421310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22207448.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31312421310 its reverse (1312421313), we get a palindrome (32624842623).

The spelling of 31312421310 in words is "thirty-one billion, three hundred twelve million, four hundred twenty-one thousand, three hundred ten".