131990966 has 16 divisors (see below), whose sum is σ = 199717056. Its totient is φ = 65421576.

The previous prime is 131990959. The next prime is 131990981. The reversal of 131990966 is 669099131.

It is a happy number.

It is a super-2 number, since 2×131990966² = 34843230211226312, which contains 22 as substring.

It is a congruent number.

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, 138905 + ... + 139851.

It is an arithmetic number, because the mean of its divisors is an integer number (12482316).

Almost surely, 2^131990966 is an apocalyptic number.

131990966 is a deficient number, since it is larger than the sum of its proper divisors (67726090).

131990966 is a wasteful number, since it uses less digits than its factorization.

131990966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 131990966 is about 11488.7321319630. The cubic root of 131990966 is about 509.1527210681.

The spelling of 131990966 in words is "one hundred thirty-one million, nine hundred ninety thousand, nine hundred sixty-six".