131563284 has 24 divisors (see below), whose sum is σ = 311306688. Its totient is φ = 43236480.

The previous prime is 131563279. The next prime is 131563291. The reversal of 131563284 is 482365131.

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, 76357 + ... + 78060.

It is an arithmetic number, because the mean of its divisors is an integer number (12971112).

Almost surely, 2^131563284 is an apocalyptic number.

It is an amenable number.

131563284 is an abundant number, since it is smaller than the sum of its proper divisors (179743404).

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

131563284 is a wasteful number, since it uses less digits than its factorization.

131563284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154495 (or 154493 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 131563284 is about 11470.1039228073. The cubic root of 131563284 is about 508.6022008872.

The spelling of 131563284 in words is "one hundred thirty-one million, five hundred sixty-three thousand, two hundred eighty-four".