131884434 has 72 divisors (see below), whose sum is σ = 330723120. Its totient is φ = 37849680.

The previous prime is 131884327. The next prime is 131884463. The reversal of 131884434 is 434488131.

131884434 is a `hidden beast` number, since 131 + 88 + 443 + 4 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39789 + ... + 42975.

Almost surely, 2^131884434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131884434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165361560).

131884434 is an abundant number, since it is smaller than the sum of its proper divisors (198838686).

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

131884434 is a wasteful number, since it uses less digits than its factorization.

131884434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3222 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 131884434 is about 11484.0948271947. The cubic root of 131884434 is about 509.0157024553.

The spelling of 131884434 in words is "one hundred thirty-one million, eight hundred eighty-four thousand, four hundred thirty-four".