231006565161 has 24 divisors (see below), whose sum is σ = 340022741760. Its totient is φ = 151076049696.

The previous prime is 231006565159. The next prime is 231006565219. The reversal of 231006565161 is 161565600132.

231006565161 is a `hidden beast` number, since 2 + 31 + 0 + 0 + 6 + 565 + 1 + 61 = 666.

It is not a de Polignac number, because 231006565161 - 2¹ = 231006565159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231006565061) 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 in 23 ways as a sum of consecutive naturals, for example, 3525480 + ... + 3590406.

It is an arithmetic number, because the mean of its divisors is an integer number (14167614240).

Almost surely, 2^231006565161 is an apocalyptic number.

It is an amenable number.

231006565161 is a deficient number, since it is larger than the sum of its proper divisors (109016176599).

231006565161 is a wasteful number, since it uses less digits than its factorization.

231006565161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72445 (or 72442 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 231006565161 in words is "two hundred thirty-one billion, six million, five hundred sixty-five thousand, one hundred sixty-one".