231317381877 has 8 divisors (see below), whose sum is σ = 309536618016. Its totient is φ = 153654866832.

The previous prime is 231317381861. The next prime is 231317381909. The reversal of 231317381877 is 778183713132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231317381877 - 2⁴ = 231317381861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231317381077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139179303 + ... + 139180964.

It is an arithmetic number, because the mean of its divisors is an integer number (38692077252).

Almost surely, 2^231317381877 is an apocalyptic number.

It is an amenable number.

231317381877 is a deficient number, since it is larger than the sum of its proper divisors (78219236139).

231317381877 is a wasteful number, since it uses less digits than its factorization.

231317381877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278360547.

The product of its digits is 1185408, while the sum is 51.

The spelling of 231317381877 in words is "two hundred thirty-one billion, three hundred seventeen million, three hundred eighty-one thousand, eight hundred seventy-seven".