100434431 has 2 divisors, whose sum is σ = 100434432. Its totient is φ = 100434430.

The previous prime is 100434427. The next prime is 100434443. The reversal of 100434431 is 134434001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100434431 - 2² = 100434427 is a prime.

It is a super-2 number, since 2×100434431² = 20174149860587522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100434331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50217215 + 50217216.

It is an arithmetic number, because the mean of its divisors is an integer number (50217216).

Almost surely, 2^100434431 is an apocalyptic number.

100434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

100434431 is an equidigital number, since it uses as much as digits as its factorization.

100434431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 100434431 is about 10021.6980098185. The cubic root of 100434431 is about 464.8300623872.

Adding to 100434431 its reverse (134434001), we get a palindrome (234868432).

The spelling of 100434431 in words is "one hundred million, four hundred thirty-four thousand, four hundred thirty-one".