100328431 has 18 divisors (see below), whose sum is σ = 120943968. Its totient is φ = 82897920.

The previous prime is 100328419. The next prime is 100328447. The reversal of 100328431 is 134823001.

It is not a de Polignac number, because 100328431 - 2⁵ = 100328399 is a prime.

It is a super-2 number, since 2×100328431² = 20131588133843522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100328401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 390255 + ... + 390511.

Almost surely, 2^100328431 is an apocalyptic number.

100328431 is a deficient number, since it is larger than the sum of its proper divisors (20615537).

100328431 is an frugal number, since it uses more digits than its factorization.

100328431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 100328431 is about 10016.4080887312. The cubic root of 100328431 is about 464.6664752905. Note that the first 3 decimals are identical.

The spelling of 100328431 in words is "one hundred million, three hundred twenty-eight thousand, four hundred thirty-one".