131464636 has 12 divisors (see below), whose sum is σ = 230186880. Its totient is φ = 65696960.

The previous prime is 131464561. The next prime is 131464639. The reversal of 131464636 is 636464131.

It is a super-2 number, since 2×131464636² = 34565901037224992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131464639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660 + ... + 16228.

It is an arithmetic number, because the mean of its divisors is an integer number (19182240).

Almost surely, 2^131464636 is an apocalyptic number.

It is an amenable number.

131464636 is a deficient number, since it is larger than the sum of its proper divisors (98722244).

131464636 is a wasteful number, since it uses less digits than its factorization.

131464636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17684 (or 17682 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 131464636 is about 11465.8028938230. The cubic root of 131464636 is about 508.4750500752.

The spelling of 131464636 in words is "one hundred thirty-one million, four hundred sixty-four thousand, six hundred thirty-six".