131566900 has 36 divisors (see below), whose sum is σ = 297918432. Its totient is φ = 50337760.

The previous prime is 131566891. The next prime is 131566901. The reversal of 131566900 is 9665131.

It is a super-2 number, since 2×131566900² = 34619698351220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131566901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26302 + ... + 30901.

It is an arithmetic number, because the mean of its divisors is an integer number (8275512).

Almost surely, 2^131566900 is an apocalyptic number.

131566900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131566900 is an abundant number, since it is smaller than the sum of its proper divisors (166351532).

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

131566900 is a wasteful number, since it uses less digits than its factorization.

131566900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57240 (or 57233 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 131566900 is about 11470.2615488924. The cubic root of 131566900 is about 508.6068604666.

The spelling of 131566900 in words is "one hundred thirty-one million, five hundred sixty-six thousand, nine hundred".