31002002023020 has 96 divisors (see below), whose sum is σ = 99215070345216. Its totient is φ = 7085553043200.

The previous prime is 31002002022989. The next prime is 31002002023039. The reversal of 31002002023020 is 2032020020013.

It is a super-2 number, since 2×31002002023020² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1600390 + ... + 8035250.

It is an arithmetic number, because the mean of its divisors is an integer number (1033490316096).

Almost surely, 2^{31002002023020} is an apocalyptic number.

31002002023020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31002002023020 is an abundant number, since it is smaller than the sum of its proper divisors (68213068322196).

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

31002002023020 is a wasteful number, since it uses less digits than its factorization.

31002002023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446351 (or 6446349 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 31002002023020 its reverse (2032020020013), we get a palindrome (33034022043033).

The spelling of 31002002023020 in words is "thirty-one trillion, two billion, two million, twenty-three thousand, twenty".