131285966 has 16 divisors (see below), whose sum is σ = 230296704. Its totient is φ = 54956664.

The previous prime is 131285933. The next prime is 131285971. The reversal of 131285966 is 669582131.

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, 108440 + ... + 109643.

It is an arithmetic number, because the mean of its divisors is an integer number (14393544).

Almost surely, 2^131285966 is an apocalyptic number.

131285966 is a deficient number, since it is larger than the sum of its proper divisors (99010738).

131285966 is a wasteful number, since it uses less digits than its factorization.

131285966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218135.

The product of its digits is 77760, while the sum is 41.

The square root of 131285966 is about 11458.0088147985. The cubic root of 131285966 is about 508.2445941189.

It can be divided in two parts, 1312 and 85966, that added together give a palindrome (87278).

The spelling of 131285966 in words is "one hundred thirty-one million, two hundred eighty-five thousand, nine hundred sixty-six".