231249432678 has 16 divisors (see below), whose sum is σ = 504544216896. Its totient is φ = 70075585640.

The previous prime is 231249432653. The next prime is 231249432779. The reversal of 231249432678 is 876234942132.

It is a happy number.

231249432678 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231249432678² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231249432678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751889576 + ... + 1751889707.

It is an arithmetic number, because the mean of its divisors is an integer number (31534013556).

Almost surely, 2^231249432678 is an apocalyptic number.

231249432678 is an abundant number, since it is smaller than the sum of its proper divisors (273294784218).

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

231249432678 is a wasteful number, since it uses less digits than its factorization.

231249432678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503779299.

The product of its digits is 3483648, while the sum is 51.

The spelling of 231249432678 in words is "two hundred thirty-one billion, two hundred forty-nine million, four hundred thirty-two thousand, six hundred seventy-eight".