131880018 has 8 divisors (see below), whose sum is σ = 263760048. Its totient is φ = 43960004.

The previous prime is 131880017. The next prime is 131880019. The reversal of 131880018 is 810088131.

It is an interprime number because it is at equal distance from previous prime (131880017) and next prime (131880019).

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

131880018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131880013) 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, 10989996 + ... + 10990007.

It is an arithmetic number, because the mean of its divisors is an integer number (32970006).

Almost surely, 2^131880018 is an apocalyptic number.

131880018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131880018 is a wasteful number, since it uses less digits than its factorization.

131880018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21980008.

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 131880018 is about 11483.9025596702. The cubic root of 131880018 is about 509.0100211216.

The spelling of 131880018 in words is "one hundred thirty-one million, eight hundred eighty thousand, eighteen".