100387731 has 8 divisors (see below), whose sum is σ = 135035280. Its totient is φ = 66332672.

The previous prime is 100387717. The next prime is 100387759. The reversal of 100387731 is 137783001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100387731 - 2⁵ = 100387699 is a prime.

It is a super-2 number, since 2×100387731² = 20155393070656722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100307731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147726 + ... + 148403.

It is an arithmetic number, because the mean of its divisors is an integer number (16879410).

Almost surely, 2^100387731 is an apocalyptic number.

100387731 is a deficient number, since it is larger than the sum of its proper divisors (34647549).

100387731 is a wasteful number, since it uses less digits than its factorization.

100387731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296245.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 100387731 is about 10019.3677944270. The cubic root of 100387731 is about 464.7580056596.

The spelling of 100387731 in words is "one hundred million, three hundred eighty-seven thousand, seven hundred thirty-one".