31311312113010 has 128 divisors (see below), whose sum is σ = 79854678558720. Its totient is φ = 7842383345664.

The previous prime is 31311312112931. The next prime is 31311312113027. The reversal of 31311312113010 is 1031121311313.

It is a super-2 number, since 2×31311312113010² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 173961382 + ... + 174141278.

It is an arithmetic number, because the mean of its divisors is an integer number (623864676240).

Almost surely, 2^{31311312113010} is an apocalyptic number.

31311312113010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31311312113010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39927339279360).

31311312113010 is an abundant number, since it is smaller than the sum of its proper divisors (48543366445710).

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

31311312113010 is a wasteful number, since it uses less digits than its factorization.

31311312113010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185380.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 31311312113010 its reverse (1031121311313), we get a palindrome (32342433424323).

The spelling of 31311312113010 in words is "thirty-one trillion, three hundred eleven billion, three hundred twelve million, one hundred thirteen thousand, ten".