231472537 has 2 divisors, whose sum is σ = 231472538. Its totient is φ = 231472536.

The previous prime is 231472499. The next prime is 231472583. The reversal of 231472537 is 735274132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147768336 + 83704201 = 12156^2 + 9149^2 .

It is a cyclic number.

It is not a de Polignac number, because 231472537 - 2²⁷ = 97254809 is a prime.

It is not a weakly prime, because it can be changed into another prime (231470537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115736268 + 115736269.

It is an arithmetic number, because the mean of its divisors is an integer number (115736269).

Almost surely, 2^231472537 is an apocalyptic number.

It is an amenable number.

231472537 is a deficient number, since it is larger than the sum of its proper divisors (1).

231472537 is an equidigital number, since it uses as much as digits as its factorization.

231472537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 34.

The square root of 231472537 is about 15214.2215377587. The cubic root of 231472537 is about 613.9973412512.

The spelling of 231472537 in words is "two hundred thirty-one million, four hundred seventy-two thousand, five hundred thirty-seven".