100006631 has 4 divisors (see below), whose sum is σ = 105889392. Its totient is φ = 94123872.

The previous prime is 100006609. The next prime is 100006637. The reversal of 100006631 is 136600001.

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

It is a cyclic number.

It is not a de Polignac number, because 100006631 - 2⁶ = 100006567 is a prime.

It is a super-2 number, since 2×100006631² = 20002652487940322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 5882743 = 100006631 / (1 + 0 + 0 + 0 + 0 + 6 + 6 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100006637) 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, 2941355 + ... + 2941388.

It is an arithmetic number, because the mean of its divisors is an integer number (26472348).

Almost surely, 2^100006631 is an apocalyptic number.

100006631 is a deficient number, since it is larger than the sum of its proper divisors (5882761).

100006631 is an equidigital number, since it uses as much as digits as its factorization.

100006631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882760.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 100006631 is about 10000.3315445039. The cubic root of 100006631 is about 464.1691425930.

Adding to 100006631 its reverse (136600001), we get a palindrome (236606632).

The spelling of 100006631 in words is "one hundred million, six thousand, six hundred thirty-one".