31112203000020 has 48 divisors (see below), whose sum is σ = 87252225825408. Its totient is φ = 8283439140480.

The previous prime is 31112203000013. The next prime is 31112203000159. The reversal of 31112203000020 is 2000030221113.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 410847019 + ... + 410922738.

It is an arithmetic number, because the mean of its divisors is an integer number (1817754704696).

Almost surely, 2^{31112203000020} is an apocalyptic number.

31112203000020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31112203000020 is an abundant number, since it is smaller than the sum of its proper divisors (56140022825388).

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

31112203000020 is a wasteful number, since it uses less digits than its factorization.

31112203000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821770400 (or 821770398 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31112203000020 its reverse (2000030221113), we get a palindrome (33112233221133).

The spelling of 31112203000020 in words is "thirty-one trillion, one hundred twelve billion, two hundred three million, twenty", and thus it is an aban number.