100231123020 has 48 divisors (see below), whose sum is σ = 320739595008. Its totient is φ = 22909970880.

The previous prime is 100231122949. The next prime is 100231123039. The reversal of 100231123020 is 20321132001.

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, 119322346 + ... + 119323185.

It is an arithmetic number, because the mean of its divisors is an integer number (6682074896).

Almost surely, 2^100231123020 is an apocalyptic number.

100231123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100231123020 is an abundant number, since it is smaller than the sum of its proper divisors (220508471988).

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

100231123020 is a wasteful number, since it uses less digits than its factorization.

100231123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238645550 (or 238645548 counting only the distinct ones).

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

Adding to 100231123020 its reverse (20321132001), we get a palindrome (120552255021).

The spelling of 100231123020 in words is "one hundred billion, two hundred thirty-one million, one hundred twenty-three thousand, twenty".