231514005421020 has 48 divisors (see below), whose sum is σ = 740844817348608. Its totient is φ = 52917486953280.

The previous prime is 231514005421007. The next prime is 231514005421031. The reversal of 231514005421020 is 20124500415132.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 275611910796 + ... + 275611911635.

It is an arithmetic number, because the mean of its divisors is an integer number (15434267028096).

Almost surely, 2^{231514005421020} is an apocalyptic number.

231514005421020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231514005421020 is an abundant number, since it is smaller than the sum of its proper divisors (509330811927588).

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

231514005421020 is a wasteful number, since it uses less digits than its factorization.

231514005421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551223822450 (or 551223822448 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 231514005421020 its reverse (20124500415132), we get a palindrome (251638505836152).

The spelling of 231514005421020 in words is "two hundred thirty-one trillion, five hundred fourteen billion, five million, four hundred twenty-one thousand, twenty".