31133131102320 has 80 divisors (see below), whose sum is σ = 103936760767392. Its totient is φ = 7663539962880.

The previous prime is 31133131102313. The next prime is 31133131102327. The reversal of 31133131102320 is 2320113133113.

It is an interprime number because it is at equal distance from previous prime (31133131102313) and next prime (31133131102327).

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 not an unprimeable number, because it can be changed into a prime (31133131102327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4989280711 + ... + 4989286950.

Almost surely, 2^{31133131102320} is an apocalyptic number.

31133131102320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31133131102320 is an abundant number, since it is smaller than the sum of its proper divisors (72803629665072).

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

31133131102320 is a wasteful number, since it uses less digits than its factorization.

31133131102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978567690 (or 9978567684 counting only the distinct ones).

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

Adding to 31133131102320 its reverse (2320113133113), we get a palindrome (33453244235433).

The spelling of 31133131102320 in words is "thirty-one trillion, one hundred thirty-three billion, one hundred thirty-one million, one hundred two thousand, three hundred twenty".