131467986 has 24 divisors (see below), whose sum is σ = 306759180. Its totient is φ = 40451616.

The previous prime is 131467979. The next prime is 131467997. The reversal of 131467986 is 689764131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 122877225 + 8590761 = 11085^2 + 2931^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280681 + ... + 281148.

Almost surely, 2^131467986 is an apocalyptic number.

131467986 is an abundant number, since it is smaller than the sum of its proper divisors (175291194).

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

131467986 is a wasteful number, since it uses less digits than its factorization.

131467986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561850 (or 561847 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 131467986 is about 11465.9489794783. The cubic root of 131467986 is about 508.4793690489.

The spelling of 131467986 in words is "one hundred thirty-one million, four hundred sixty-seven thousand, nine hundred eighty-six".