231215683 has 2 divisors, whose sum is σ = 231215684. Its totient is φ = 231215682.

The previous prime is 231215669. The next prime is 231215707. The reversal of 231215683 is 386512132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231215683 - 2⁵ = 231215651 is a prime.

It is not a weakly prime, because it can be changed into another prime (231215653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115607841 + 115607842.

It is an arithmetic number, because the mean of its divisors is an integer number (115607842).

Almost surely, 2^231215683 is an apocalyptic number.

231215683 is a deficient number, since it is larger than the sum of its proper divisors (1).

231215683 is an equidigital number, since it uses as much as digits as its factorization.

231215683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 231215683 is about 15205.7779478723. Note that the first 3 decimals coincide. The cubic root of 231215683 is about 613.7701493711.

The spelling of 231215683 in words is "two hundred thirty-one million, two hundred fifteen thousand, six hundred eighty-three".