100342431 has 12 divisors (see below), whose sum is σ = 165644752. Its totient is φ = 57338496.

The previous prime is 100342387. The next prime is 100342441. The reversal of 100342431 is 134243001.

It is not a de Polignac number, because 100342431 - 2¹⁵ = 100309663 is a prime.

It is a super-2 number, since 2×100342431² = 20137206917979522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100342441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 796306 + ... + 796431.

Almost surely, 2^100342431 is an apocalyptic number.

100342431 is a deficient number, since it is larger than the sum of its proper divisors (65302321).

100342431 is a wasteful number, since it uses less digits than its factorization.

100342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592750 (or 1592747 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 100342431 is about 10017.1069176684. The cubic root of 100342431 is about 464.6880877355.

Adding to 100342431 its reverse (134243001), we get a palindrome (234585432).

It can be divided in two parts, 1003 and 42431, that added together give a palindrome (43434).

The spelling of 100342431 in words is "one hundred million, three hundred forty-two thousand, four hundred thirty-one".