31313000123232 has 48 divisors (see below), whose sum is σ = 83589788479680. Its totient is φ = 10260757100672.

The previous prime is 31313000123227. The next prime is 31313000123263. The reversal of 31313000123232 is 23232100031313.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×31313000123232² (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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2764206918 + ... + 2764218245.

It is an arithmetic number, because the mean of its divisors is an integer number (1741453926660).

Almost surely, 2^{31313000123232} is an apocalyptic number.

31313000123232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31313000123232 is an abundant number, since it is smaller than the sum of its proper divisors (52276788356448).

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

31313000123232 is a wasteful number, since it uses less digits than its factorization.

31313000123232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528425235 (or 5528425227 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31313000123232 its reverse (23232100031313), we get a palindrome (54545100154545).

The spelling of 31313000123232 in words is "thirty-one trillion, three hundred thirteen billion, one hundred twenty-three thousand, two hundred thirty-two".