231117836121 has 12 divisors (see below), whose sum is σ = 336385249200. Its totient is φ = 152902384440.

The previous prime is 231117836119. The next prime is 231117836149. The reversal of 231117836121 is 121638711132.

231117836121 is a `hidden beast` number, since 2 + 31 + 1 + 1 + 7 + 8 + 3 + 612 + 1 = 666.

It is not a de Polignac number, because 231117836121 - 2¹ = 231117836119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231117836101) 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 11 ways as a sum of consecutive naturals, for example, 98013171 + ... + 98015528.

It is an arithmetic number, because the mean of its divisors is an integer number (28032104100).

Almost surely, 2^231117836121 is an apocalyptic number.

It is an amenable number.

231117836121 is a deficient number, since it is larger than the sum of its proper divisors (105267413079).

231117836121 is a wasteful number, since it uses less digits than its factorization.

231117836121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196028836 (or 196028833 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The spelling of 231117836121 in words is "two hundred thirty-one billion, one hundred seventeen million, eight hundred thirty-six thousand, one hundred twenty-one".