231165670256 has 80 divisors (see below), whose sum is σ = 475596226560. Its totient is φ = 108539585280.

The previous prime is 231165670249. The next prime is 231165670259. The reversal of 231165670256 is 652076561132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231165670259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60496826 + ... + 60500646.

It is an arithmetic number, because the mean of its divisors is an integer number (5944952832).

Almost surely, 2^231165670256 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 231165670256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237798113280).

231165670256 is an abundant number, since it is smaller than the sum of its proper divisors (244430556304).

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

231165670256 is a wasteful number, since it uses less digits than its factorization.

231165670256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542 (or 5536 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 231165670256 in words is "two hundred thirty-one billion, one hundred sixty-five million, six hundred seventy thousand, two hundred fifty-six".