104564431 has 4 divisors (see below), whose sum is σ = 106278664. Its totient is φ = 102850200.

The previous prime is 104564419. The next prime is 104564443. The reversal of 104564431 is 134465401.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (104564419) and next prime (104564443).

It is a cyclic number.

It is not a de Polignac number, because 104564431 - 2⁷ = 104564303 is a prime.

It is a super-2 number, since 2×104564431² = 21867440460707522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104564431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104562431) 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, 857025 + ... + 857146.

It is an arithmetic number, because the mean of its divisors is an integer number (26569666).

Almost surely, 2^104564431 is an apocalyptic number.

104564431 is a deficient number, since it is larger than the sum of its proper divisors (1714233).

104564431 is an equidigital number, since it uses as much as digits as its factorization.

104564431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714232.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 104564431 is about 10225.6750877387. The cubic root of 104564431 is about 471.1161506600.

The spelling of 104564431 in words is "one hundred four million, five hundred sixty-four thousand, four hundred thirty-one".