1231033013220 has 96 divisors (see below), whose sum is σ = 3649861555200. Its totient is φ = 308947308544.

The previous prime is 1231033013219. The next prime is 1231033013263. The reversal of 1231033013220 is 223103301321.

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, 32783416 + ... + 32820944.

It is an arithmetic number, because the mean of its divisors is an integer number (38019391200).

Almost surely, 2^{1231033013220} is an apocalyptic number.

1231033013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231033013220 is an abundant number, since it is smaller than the sum of its proper divisors (2418828541980).

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

1231033013220 is a wasteful number, since it uses less digits than its factorization.

1231033013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69717 (or 69715 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1231033013220 its reverse (223103301321), we get a palindrome (1454136314541).

The spelling of 1231033013220 in words is "one trillion, two hundred thirty-one billion, thirty-three million, thirteen thousand, two hundred twenty".