100088531 has 4 divisors (see below), whose sum is σ = 100171200. Its totient is φ = 100005864.

The previous prime is 100088519. The next prime is 100088543. The reversal of 100088531 is 135880001.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (100088519) and next prime (100088543).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100088531 is a prime.

It is a super-2 number, since 2×100088531² = 20035428075475922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100088531.

It is not an unprimeable number, because it can be changed into a prime (100088551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39491 + ... + 41948.

It is an arithmetic number, because the mean of its divisors is an integer number (25042800).

Almost surely, 2^100088531 is an apocalyptic number.

100088531 is a deficient number, since it is larger than the sum of its proper divisors (82669).

100088531 is an equidigital number, since it uses as much as digits as its factorization.

100088531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82668.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 100088531 is about 10004.4255707162. The cubic root of 100088531 is about 464.2958177931.

The spelling of 100088531 in words is "one hundred million, eighty-eight thousand, five hundred thirty-one".