231332331420 has 72 divisors (see below), whose sum is σ = 701797234320. Its totient is φ = 61680783360.

The previous prime is 231332331413. The next prime is 231332331437. The reversal of 231332331420 is 24133233132.

231332331420 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 3 + 233 + 1 + 420 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1414876 + ... + 1569884.

It is an arithmetic number, because the mean of its divisors is an integer number (9747183810).

Almost surely, 2^231332331420 is an apocalyptic number.

231332331420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231332331420 is an abundant number, since it is smaller than the sum of its proper divisors (470464902900).

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

231332331420 is a wasteful number, since it uses less digits than its factorization.

231332331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163315 (or 163310 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 231332331420 its reverse (24133233132), we get a palindrome (255465564552).

The spelling of 231332331420 in words is "two hundred thirty-one billion, three hundred thirty-two million, three hundred thirty-one thousand, four hundred twenty".