131663644 has 24 divisors (see below), whose sum is σ = 263994080. Its totient is φ = 56284416.

The previous prime is 131663641. The next prime is 131663671. The reversal of 131663644 is 446366131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131663641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5704 + ... + 17200.

Almost surely, 2^131663644 is an apocalyptic number.

131663644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131663644 is an abundant number, since it is smaller than the sum of its proper divisors (132330436).

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

131663644 is a wasteful number, since it uses less digits than its factorization.

131663644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11917 (or 11915 counting only the distinct ones).

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

The square root of 131663644 is about 11474.4779401941. The cubic root of 131663644 is about 508.7314931481.

The spelling of 131663644 in words is "one hundred thirty-one million, six hundred sixty-three thousand, six hundred forty-four".