131696424 has 48 divisors (see below), whose sum is σ = 368982900. Its totient is φ = 42384384.

The previous prime is 131696419. The next prime is 131696443. The reversal of 131696424 is 424696131.

131696424 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 9 + 642 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 116251524 + 15444900 = 10782^2 + 3930^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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, 29449 + ... + 33624.

Almost surely, 2^131696424 is an apocalyptic number.

It is an amenable number.

131696424 is an abundant number, since it is smaller than the sum of its proper divisors (237286476).

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

131696424 is a wasteful number, since it uses less digits than its factorization.

131696424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63114 (or 63107 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 131696424 is about 11475.9062387247. The cubic root of 131696424 is about 508.7737088883.

The spelling of 131696424 in words is "one hundred thirty-one million, six hundred ninety-six thousand, four hundred twenty-four".