231625369 has 2 divisors, whose sum is σ = 231625370. Its totient is φ = 231625368.

The previous prime is 231625351. The next prime is 231625399. The reversal of 231625369 is 963526132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151290000 + 80335369 = 12300^2 + 8963^2 .

It is a cyclic number.

It is not a de Polignac number, because 231625369 - 2⁹ = 231624857 is a prime.

It is a super-2 number, since 2×231625369² = 107300623128772322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231625399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115812684 + 115812685.

It is an arithmetic number, because the mean of its divisors is an integer number (115812685).

Almost surely, 2^231625369 is an apocalyptic number.

It is an amenable number.

231625369 is a deficient number, since it is larger than the sum of its proper divisors (1).

231625369 is an equidigital number, since it uses as much as digits as its factorization.

231625369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 37.

The square root of 231625369 is about 15219.2433780395. The cubic root of 231625369 is about 614.1324440987.

The spelling of 231625369 in words is "two hundred thirty-one million, six hundred twenty-five thousand, three hundred sixty-nine".