100889631 has 10 divisors (see below), whose sum is σ = 150711792. Its totient is φ = 67259700.

The previous prime is 100889629. The next prime is 100889647. The reversal of 100889631 is 136988001.

100889631 is a `hidden beast` number, since 10 + 0 + 8 + 8 + 9 + 631 = 666.

It is not a de Polignac number, because 100889631 - 2¹ = 100889629 is a prime.

It is a super-2 number, since 2×100889631² = 20357435286632322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100889671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 622695 + ... + 622856.

Almost surely, 2^100889631 is an apocalyptic number.

100889631 is a deficient number, since it is larger than the sum of its proper divisors (49822161).

100889631 is an equidigital number, since it uses as much as digits as its factorization.

100889631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245563 (or 1245554 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 100889631 is about 10044.3830572116. The cubic root of 100889631 is about 465.5312554606.

The spelling of 100889631 in words is "one hundred million, eight hundred eighty-nine thousand, six hundred thirty-one".