31312340310 has 32 divisors (see below), whose sum is σ = 75160546560. Its totient is φ = 8348743008.

The previous prime is 31312340303. The next prime is 31312340359. The reversal of 31312340310 is 1304321313.

It is a super-2 number, since 2×31312340310² (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, 144279 + ... + 288861.

It is an arithmetic number, because the mean of its divisors is an integer number (2348767080).

Almost surely, 2^31312340310 is an apocalyptic number.

31312340310 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31312340310 is an abundant number, since it is smaller than the sum of its proper divisors (43848206250).

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

31312340310 is a wasteful number, since it uses less digits than its factorization.

31312340310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151812.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31312340310 its reverse (1304321313), we get a palindrome (32616661623).

The spelling of 31312340310 in words is "thirty-one billion, three hundred twelve million, three hundred forty thousand, three hundred ten".