31231312131030 has 32 divisors (see below), whose sum is σ = 81769253580288. Its totient is φ = 7571227183200.

The previous prime is 31231312131017. The next prime is 31231312131133. The reversal of 31231312131030 is 3013121313213.

It is a Curzon number.

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, 47320169566 + ... + 47320170225.

It is an arithmetic number, because the mean of its divisors is an integer number (2555289174384).

Almost surely, 2^{31231312131030} is an apocalyptic number.

31231312131030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31231312131030 is an abundant number, since it is smaller than the sum of its proper divisors (50537941449258).

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

31231312131030 is a wasteful number, since it uses less digits than its factorization.

31231312131030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94640339812.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31231312131030 its reverse (3013121313213), we get a palindrome (34244433444243).

The spelling of 31231312131030 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twelve million, one hundred thirty-one thousand, thirty".