180163131 has 4 divisors (see below), whose sum is σ = 240217512. Its totient is φ = 120108752.

The previous prime is 180163129. The next prime is 180163133. The reversal of 180163131 is 131361081.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (180163129) and next prime (180163133).

It is a cyclic number.

It is not a de Polignac number, because 180163131 - 2¹ = 180163129 is a prime.

It is a super-2 number, since 2×180163131² = 64917507543446322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (180163133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30027186 + ... + 30027191.

It is an arithmetic number, because the mean of its divisors is an integer number (60054378).

Almost surely, 2^180163131 is an apocalyptic number.

180163131 is a deficient number, since it is larger than the sum of its proper divisors (60054381).

180163131 is an equidigital number, since it uses as much as digits as its factorization.

180163131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60054380.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 180163131 is about 13422.4860215982. The cubic root of 180163131 is about 564.7921348804.

The spelling of 180163131 in words is "one hundred eighty million, one hundred sixty-three thousand, one hundred thirty-one".