231937936 has 40 divisors (see below), whose sum is σ = 482373144. Its totient is φ = 107642880.

The previous prime is 231937913. The next prime is 231937949. The reversal of 231937936 is 639739132.

231937936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69222400 + 162715536 = 8320^2 + 12756^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 231937892 and 231937901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14016 + ... + 25696.

Almost surely, 2^231937936 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 231937936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241186572).

231937936 is an abundant number, since it is smaller than the sum of its proper divisors (250435208).

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

231937936 is a wasteful number, since it uses less digits than its factorization.

231937936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11779 (or 11773 counting only the distinct ones).

The product of its digits is 183708, while the sum is 43.

The square root of 231937936 is about 15229.5087248407. The cubic root of 231937936 is about 614.4085670689.

The spelling of 231937936 in words is "two hundred thirty-one million, nine hundred thirty-seven thousand, nine hundred thirty-six".