231386654087 has 2 divisors, whose sum is σ = 231386654088. Its totient is φ = 231386654086.

The previous prime is 231386654063. The next prime is 231386654137. The reversal of 231386654087 is 780456683132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231386654087 - 2²⁸ = 231118218631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231386654047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115693327043 + 115693327044.

It is an arithmetic number, because the mean of its divisors is an integer number (115693327044).

Almost surely, 2^231386654087 is an apocalyptic number.

231386654087 is a deficient number, since it is larger than the sum of its proper divisors (1).

231386654087 is an equidigital number, since it uses as much as digits as its factorization.

231386654087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 231386654087 in words is "two hundred thirty-one billion, three hundred eighty-six million, six hundred fifty-four thousand, eighty-seven".