231940707 has 12 divisors (see below), whose sum is σ = 328517016. Its totient is φ = 145530880.

The previous prime is 231940703. The next prime is 231940721. The reversal of 231940707 is 707049132.

231940707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231940707 - 2² = 231940703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231940703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132894 + ... + 134627.

It is an arithmetic number, because the mean of its divisors is an integer number (27376418).

Almost surely, 2^231940707 is an apocalyptic number.

231940707 is a deficient number, since it is larger than the sum of its proper divisors (96576309).

231940707 is a wasteful number, since it uses less digits than its factorization.

231940707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267558 (or 267541 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 231940707 is about 15229.5996992698. The cubic root of 231940707 is about 614.4110138720.

Adding to 231940707 its reverse (707049132), we get a palindrome (938989839).

The spelling of 231940707 in words is "two hundred thirty-one million, nine hundred forty thousand, seven hundred seven".