31233311320020 has 48 divisors (see below), whose sum is σ = 92597581798848. Its totient is φ = 7838948723200.

The previous prime is 31233311320009. The next prime is 31233311320031. The reversal of 31233311320020 is 2002311333213.

It is an interprime number because it is at equal distance from previous prime (31233311320009) and next prime (31233311320031).

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, 15310445706 + ... + 15310447745.

It is an arithmetic number, because the mean of its divisors is an integer number (1929116287476).

Almost surely, 2^{31233311320020} is an apocalyptic number.

31233311320020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31233311320020 is an abundant number, since it is smaller than the sum of its proper divisors (61364270478828).

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

31233311320020 is a wasteful number, since it uses less digits than its factorization.

31233311320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30620893480 (or 30620893478 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31233311320020 its reverse (2002311333213), we get a palindrome (33235622653233).

The spelling of 31233311320020 in words is "thirty-one trillion, two hundred thirty-three billion, three hundred eleven million, three hundred twenty thousand, twenty".