131198992 has 40 divisors (see below), whose sum is σ = 266143680. Its totient is φ = 62536320.

The previous prime is 131198981. The next prime is 131199007. The reversal of 131198992 is 299891131.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 198759 + ... + 199417.

It is an arithmetic number, because the mean of its divisors is an integer number (6653592).

Almost surely, 2^131198992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131198992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133071840).

131198992 is an abundant number, since it is smaller than the sum of its proper divisors (134944688).

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

131198992 is a wasteful number, since it uses less digits than its factorization.

131198992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1225 counting only the distinct ones).

The product of its digits is 34992, while the sum is 43.

The square root of 131198992 is about 11454.2128494279. The cubic root of 131198992 is about 508.1323357878.

The spelling of 131198992 in words is "one hundred thirty-one million, one hundred ninety-eight thousand, nine hundred ninety-two".