31323120231120 has 40 divisors (see below), whose sum is σ = 97101672717216. Its totient is φ = 8352832061568.

The previous prime is 31323120231101. The next prime is 31323120231197. The reversal of 31323120231120 is 2113202132313.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×31323120231120² (a number of 28 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 65256500242 + ... + 65256500721.

Almost surely, 2^{31323120231120} is an apocalyptic number.

31323120231120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31323120231120 is an abundant number, since it is smaller than the sum of its proper divisors (65778552486096).

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

31323120231120 is a wasteful number, since it uses less digits than its factorization.

31323120231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130513000979 (or 130513000973 counting only the distinct ones).

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

Adding to 31323120231120 its reverse (2113202132313), we get a palindrome (33436322363433).

The spelling of 31323120231120 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred twenty million, two hundred thirty-one thousand, one hundred twenty".