131989131 has 6 divisors (see below), whose sum is σ = 190650980. Its totient is φ = 87992748.

The previous prime is 131989097. The next prime is 131989163.

131989131 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 131989131 - 2¹⁰ = 131988107 is a prime.

It is a super-2 number, since 2×131989131² = 34842261404270322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131981131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7332721 + ... + 7332738.

Almost surely, 2^131989131 is an apocalyptic number.

131989131 is a deficient number, since it is larger than the sum of its proper divisors (58661849).

131989131 is a wasteful number, since it uses less digits than its factorization.

131989131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14665465 (or 14665462 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 131989131 is about 11488.6522708279. The cubic root of 131989131 is about 509.1503615642.

The spelling of 131989131 in words is "one hundred thirty-one million, nine hundred eighty-nine thousand, one hundred thirty-one".