231020311020 has 96 divisors (see below), whose sum is σ = 687773721600. Its totient is φ = 57738906624.

The previous prime is 231020311019. The next prime is 231020311033. The reversal of 231020311020 is 20113020132.

231020311020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 230050 + ... + 717609.

It is an arithmetic number, because the mean of its divisors is an integer number (7164309600).

Almost surely, 2^231020311020 is an apocalyptic number.

231020311020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231020311020 is an abundant number, since it is smaller than the sum of its proper divisors (456753410580).

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

231020311020 is a wasteful number, since it uses less digits than its factorization.

231020311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947927 (or 947925 counting only the distinct ones).

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

Adding to 231020311020 its reverse (20113020132), we get a palindrome (251133331152).

The spelling of 231020311020 in words is "two hundred thirty-one billion, twenty million, three hundred eleven thousand, twenty".