231677402688 has 280 divisors, whose sum is σ = 716924518904. Its totient is φ = 73903104000.

The previous prime is 231677402669. The next prime is 231677402689. The reversal of 231677402688 is 886204776132.

It can be written as a sum of positive squares in 4 ways, for example, as 1116094464 + 230561308224 = 33408^2 + 480168^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (231677402689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11690388 + ... + 11710188.

Almost surely, 2^231677402688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231677402688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358462259452).

231677402688 is an abundant number, since it is smaller than the sum of its proper divisors (485247116216).

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

231677402688 is a wasteful number, since it uses less digits than its factorization.

231677402688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19923 (or 19904 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 231677402688 in words is "two hundred thirty-one billion, six hundred seventy-seven million, four hundred two thousand, six hundred eighty-eight".