231917952 has 192 divisors, whose sum is σ = 746150400. Its totient is φ = 62512128.

The previous prime is 231917941. The next prime is 231917953. The reversal of 231917952 is 259719132.

It is a tau number, because it is divible by the number of its divisors (192).

Its product of digits (34020) is a multiple of the sum of its prime divisors (270).

It is a self number, because there is not a number n which added to its sum of digits gives 231917952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231917953) 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, 970249 + ... + 970487.

It is an arithmetic number, because the mean of its divisors is an integer number (3886200).

Almost surely, 2^231917952 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 231917952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373075200).

231917952 is an abundant number, since it is smaller than the sum of its proper divisors (514232448).

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

231917952 is a wasteful number, since it uses less digits than its factorization.

231917952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 270 counting only the distinct ones).

The product of its digits is 34020, while the sum is 39.

The square root of 231917952 is about 15228.8526160049. The cubic root of 231917952 is about 614.3909205473.

The spelling of 231917952 in words is "two hundred thirty-one million, nine hundred seventeen thousand, nine hundred fifty-two".