31231003232020 has 24 divisors (see below), whose sum is σ = 68436633170304. Its totient is φ = 11949253410336.

The previous prime is 31231003231963. The next prime is 31231003232087. The reversal of 31231003232020 is 2023230013213.

It is a junction number, because it is equal to n+sod(n) for n = 31231003231982 and 31231003232000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33946742184 + ... + 33946743103.

It is an arithmetic number, because the mean of its divisors is an integer number (2851526382096).

Almost surely, 2^{31231003232020} is an apocalyptic number.

It is an amenable number.

31231003232020 is an abundant number, since it is smaller than the sum of its proper divisors (37205629938284).

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

31231003232020 is a wasteful number, since it uses less digits than its factorization.

31231003232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67893485319 (or 67893485317 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31231003232020 its reverse (2023230013213), we get a palindrome (33254233245233).

The spelling of 31231003232020 in words is "thirty-one trillion, two hundred thirty-one billion, three million, two hundred thirty-two thousand, twenty".