231855677 has 2 divisors, whose sum is σ = 231855678. Its totient is φ = 231855676.

The previous prime is 231855671. The next prime is 231855713. The reversal of 231855677 is 776558132.

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., 217002361 + 14853316 = 14731^2 + 3854^2 .

It is a cyclic number.

It is not a de Polignac number, because 231855677 - 2⁴ = 231855661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231855671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115927838 + 115927839.

It is an arithmetic number, because the mean of its divisors is an integer number (115927839).

Almost surely, 2^231855677 is an apocalyptic number.

It is an amenable number.

231855677 is a deficient number, since it is larger than the sum of its proper divisors (1).

231855677 is an equidigital number, since it uses as much as digits as its factorization.

231855677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 231855677 is about 15226.8078401220. The cubic root of 231855677 is about 614.3359231952.

The spelling of 231855677 in words is "two hundred thirty-one million, eight hundred fifty-five thousand, six hundred seventy-seven".