31002223033020 has 48 divisors (see below), whose sum is σ = 88653165447168. Its totient is φ = 8091360336960.

The previous prime is 31002223032961. The next prime is 31002223033063. The reversal of 31002223033020 is 2033032220013.

It is a super-2 number, since 2×31002223033020² (a number of 28 digits) contains 22 as substring.

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, 5496845236 + ... + 5496850875.

It is an arithmetic number, because the mean of its divisors is an integer number (1846940946816).

Almost surely, 2^{31002223033020} is an apocalyptic number.

31002223033020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31002223033020 is an abundant number, since it is smaller than the sum of its proper divisors (57650942414148).

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

31002223033020 is a wasteful number, since it uses less digits than its factorization.

31002223033020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10993696170 (or 10993696168 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31002223033020 its reverse (2033032220013), we get a palindrome (33035255253033).

The spelling of 31002223033020 in words is "thirty-one trillion, two billion, two hundred twenty-three million, thirty-three thousand, twenty".