231969937 has 2 divisors, whose sum is σ = 231969938. Its totient is φ = 231969936.

The previous prime is 231969929. The next prime is 231969949. The reversal of 231969937 is 739969132.

231969937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201895681 + 30074256 = 14209^2 + 5484^2 .

It is a cyclic number.

It is not a de Polignac number, because 231969937 - 2³ = 231969929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231969967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115984968 + 115984969.

It is an arithmetic number, because the mean of its divisors is an integer number (115984969).

Almost surely, 2^231969937 is an apocalyptic number.

It is an amenable number.

231969937 is a deficient number, since it is larger than the sum of its proper divisors (1).

231969937 is an equidigital number, since it uses as much as digits as its factorization.

231969937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 49.

The square root of 231969937 is about 15230.5593134330. The cubic root of 231969937 is about 614.4368228813.

It can be divided in two parts, 23196 and 9937, that added together give a palindrome (33133).

The spelling of 231969937 in words is "two hundred thirty-one million, nine hundred sixty-nine thousand, nine hundred thirty-seven".