100431911 has 4 divisors (see below), whose sum is σ = 100454424. Its totient is φ = 100409400.

The previous prime is 100431893. The next prime is 100431913. The reversal of 100431911 is 119134001.

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 100431911 - 2¹⁰ = 100430887 is a prime.

It is a super-2 number, since 2×100431911² = 20173137494223842, 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 (100431913) 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, 2060 + ... + 14321.

It is an arithmetic number, because the mean of its divisors is an integer number (25113606).

Almost surely, 2^100431911 is an apocalyptic number.

100431911 is a deficient number, since it is larger than the sum of its proper divisors (22513).

100431911 is an equidigital number, since it uses as much as digits as its factorization.

100431911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22512.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 100431911 is about 10021.5722818328. The cubic root of 100431911 is about 464.8261746714.

Adding to 100431911 its reverse (119134001), we get a palindrome (219565912).

The spelling of 100431911 in words is "one hundred million, four hundred thirty-one thousand, nine hundred eleven".