131988651 has 8 divisors (see below), whose sum is σ = 183636480. Its totient is φ = 84166632.

The previous prime is 131988641. The next prime is 131988707. The reversal of 131988651 is 156889131.

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

It is not a de Polignac number, because 131988651 - 2⁶ = 131988587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131988641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956371 + ... + 956508.

It is an arithmetic number, because the mean of its divisors is an integer number (22954560).

Almost surely, 2^131988651 is an apocalyptic number.

131988651 is a deficient number, since it is larger than the sum of its proper divisors (51647829).

131988651 is a wasteful number, since it uses less digits than its factorization.

131988651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912905.

The product of its digits is 51840, while the sum is 42.

The square root of 131988651 is about 11488.6313806302. The cubic root of 131988651 is about 509.1497443607.

The spelling of 131988651 in words is "one hundred thirty-one million, nine hundred eighty-eight thousand, six hundred fifty-one".