231275616437 has 2 divisors, whose sum is σ = 231275616438. Its totient is φ = 231275616436.

The previous prime is 231275616433. The next prime is 231275616457. The reversal of 231275616437 is 734616572132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189578384836 + 41697231601 = 435406^2 + 204199^2 .

It is a cyclic number.

It is not a de Polignac number, because 231275616437 - 2² = 231275616433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231275616391 and 231275616400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231275616431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115637808218 + 115637808219.

It is an arithmetic number, because the mean of its divisors is an integer number (115637808219).

Almost surely, 2^231275616437 is an apocalyptic number.

It is an amenable number.

231275616437 is a deficient number, since it is larger than the sum of its proper divisors (1).

231275616437 is an equidigital number, since it uses as much as digits as its factorization.

231275616437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 47.

The spelling of 231275616437 in words is "two hundred thirty-one billion, two hundred seventy-five million, six hundred sixteen thousand, four hundred thirty-seven".