131575500 has 144 divisors (see below), whose sum is σ = 474487104. Its totient is φ = 30067200.

The previous prime is 131575469. The next prime is 131575517. The reversal of 131575500 is 5575131.

131575500 is a `hidden beast` number, since 1 + 3 + 157 + 5 + 500 = 666.

It is a super-2 number, since 2×131575500² = 34624224400500000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29412 + ... + 33588.

Almost surely, 2^131575500 is an apocalyptic number.

131575500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131575500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237243552).

131575500 is an abundant number, since it is smaller than the sum of its proper divisors (342911604).

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

131575500 is a wasteful number, since it uses less digits than its factorization.

131575500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209 (or 4194 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 131575500 is about 11470.6364252381. The cubic root of 131575500 is about 508.6179420879.

The spelling of 131575500 in words is "one hundred thirty-one million, five hundred seventy-five thousand, five hundred".