31231302123120 has 80 divisors (see below), whose sum is σ = 105618585370752. Its totient is φ = 7571224756480.

The previous prime is 31231302123107. The next prime is 31231302123169. The reversal of 31231302123120 is 2132120313213.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 5915016702 + ... + 5915021981.

Almost surely, 2^{31231302123120} is an apocalyptic number.

31231302123120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31231302123120 is an abundant number, since it is smaller than the sum of its proper divisors (74387283247632).

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

31231302123120 is a wasteful number, since it uses less digits than its factorization.

31231302123120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11830038710 (or 11830038704 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31231302123120 its reverse (2132120313213), we get a palindrome (33363422436333).

The spelling of 31231302123120 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred two million, one hundred twenty-three thousand, one hundred twenty".