231355545340 has 24 divisors (see below), whose sum is σ = 486887021712. Its totient is φ = 92344051200.

The previous prime is 231355545271. The next prime is 231355545367. The reversal of 231355545340 is 43545553132.

It is a junction number, because it is equal to n+sod(n) for n = 231355545293 and 231355545302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12375861 + ... + 12394540.

It is an arithmetic number, because the mean of its divisors is an integer number (20286959238).

Almost surely, 2^231355545340 is an apocalyptic number.

231355545340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231355545340 is an abundant number, since it is smaller than the sum of its proper divisors (255531476372).

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

231355545340 is a wasteful number, since it uses less digits than its factorization.

231355545340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24770877 (or 24770875 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 40.

The spelling of 231355545340 in words is "two hundred thirty-one billion, three hundred fifty-five million, five hundred forty-five thousand, three hundred forty".