231063572166 has 16 divisors (see below), whose sum is σ = 528145307904. Its totient is φ = 66018163464.

The previous prime is 231063572147. The next prime is 231063572197. The reversal of 231063572166 is 661275360132.

It is a super-2 number, since 2×231063572166² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5501513623 = 231063572166 / (2 + 3 + 1 + 0 + 6 + 3 + 5 + 7 + 2 + 1 + 6 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2750756770 + ... + 2750756853.

It is an arithmetic number, because the mean of its divisors is an integer number (33009081744).

Almost surely, 2^231063572166 is an apocalyptic number.

231063572166 is an abundant number, since it is smaller than the sum of its proper divisors (297081735738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231063572166 is a wasteful number, since it uses less digits than its factorization.

231063572166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501513635.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 231063572166 in words is "two hundred thirty-one billion, sixty-three million, five hundred seventy-two thousand, one hundred sixty-six".