231492010878 has 48 divisors (see below), whose sum is σ = 509883660000. Its totient is φ = 75884840640.

The previous prime is 231492010873. The next prime is 231492010879. The reversal of 231492010878 is 878010294132.

It is a happy number.

It is a super-2 number, since 2×231492010878² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231492010873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6998623 + ... + 7031621.

It is an arithmetic number, because the mean of its divisors is an integer number (10622576250).

Almost surely, 2^231492010878 is an apocalyptic number.

231492010878 is an abundant number, since it is smaller than the sum of its proper divisors (278391649122).

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

231492010878 is a wasteful number, since it uses less digits than its factorization.

231492010878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39457 (or 39454 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 231492010878 in words is "two hundred thirty-one billion, four hundred ninety-two million, ten thousand, eight hundred seventy-eight".