231687136296 has 960 divisors, whose sum is σ = 869538447360. Its totient is φ = 56881440000.

The previous prime is 231687136279. The next prime is 231687136297. The reversal of 231687136296 is 692631786132.

231687136296 is a `hidden beast` number, since 2 + 3 + 1 + 6 + 8 + 7 + 1 + 3 + 629 + 6 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (231687136297) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1213021561 + ... + 1213021751.

It is an arithmetic number, because the mean of its divisors is an integer number (905769216).

Almost surely, 2^231687136296 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 231687136296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434769223680).

231687136296 is an abundant number, since it is smaller than the sum of its proper divisors (637851311064).

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

231687136296 is a wasteful number, since it uses less digits than its factorization.

231687136296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 388 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 231687136296 in words is "two hundred thirty-one billion, six hundred eighty-seven million, one hundred thirty-six thousand, two hundred ninety-six".