31023023320020 has 24 divisors (see below), whose sum is σ = 86864465296224. Its totient is φ = 8272806218656.

The previous prime is 31023023319997. The next prime is 31023023320061. The reversal of 31023023320020 is 2002332032013.

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, 258525194274 + ... + 258525194393.

It is an arithmetic number, because the mean of its divisors is an integer number (3619352720676).

Almost surely, 2^{31023023320020} is an apocalyptic number.

31023023320020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31023023320020 is an abundant number, since it is smaller than the sum of its proper divisors (55841441976204).

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

31023023320020 is a wasteful number, since it uses less digits than its factorization.

31023023320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517050388679 (or 517050388677 counting only the distinct ones).

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

Adding to 31023023320020 its reverse (2002332032013), we get a palindrome (33025355352033).

The spelling of 31023023320020 in words is "thirty-one trillion, twenty-three billion, twenty-three million, three hundred twenty thousand, twenty".