31312030113210 has 128 divisors (see below), whose sum is σ = 94375985393664. Its totient is φ = 6458903861760.

The previous prime is 31312030113127. The next prime is 31312030113277. The reversal of 31312030113210 is 1231103021313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 49154302 + ... + 49787241.

It is an arithmetic number, because the mean of its divisors is an integer number (737312385888).

Almost surely, 2^{31312030113210} is an apocalyptic number.

31312030113210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31312030113210 is an abundant number, since it is smaller than the sum of its proper divisors (63063955280454).

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

31312030113210 is a wasteful number, since it uses less digits than its factorization.

31312030113210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98941708.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31312030113210 its reverse (1231103021313), we get a palindrome (32543133134523).

The spelling of 31312030113210 in words is "thirty-one trillion, three hundred twelve billion, thirty million, one hundred thirteen thousand, two hundred ten".