231102211020 has 48 divisors (see below), whose sum is σ = 650474108928. Its totient is φ = 61304597440.

The previous prime is 231102211009. The next prime is 231102211031. The reversal of 231102211020 is 20112201132.

231102211020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231102211009) and next prime (231102211031).

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 15 ways as a sum of consecutive naturals, for example, 10071534 + ... + 10094453.

It is an arithmetic number, because the mean of its divisors is an integer number (13551543936).

Almost surely, 2^231102211020 is an apocalyptic number.

231102211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231102211020 is an abundant number, since it is smaller than the sum of its proper divisors (419371897908).

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

231102211020 is a wasteful number, since it uses less digits than its factorization.

231102211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20166190 (or 20166188 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 231102211020 its reverse (20112201132), we get a palindrome (251214412152).

The spelling of 231102211020 in words is "two hundred thirty-one billion, one hundred two million, two hundred eleven thousand, twenty".