431378604 has 36 divisors (see below), whose sum is σ = 1154573784. Its totient is φ = 135334272.

The previous prime is 431378599. The next prime is 431378611. The reversal of 431378604 is 406873134.

431378604 is a `hidden beast` number, since 43 + 1 + 3 + 7 + 8 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351822 + ... + 353045.

It is an arithmetic number, because the mean of its divisors is an integer number (32071494).

Almost surely, 2^431378604 is an apocalyptic number.

It is an amenable number.

431378604 is an abundant number, since it is smaller than the sum of its proper divisors (723195180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431378604 is a wasteful number, since it uses less digits than its factorization.

431378604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704894 (or 704889 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 431378604 is about 20769.6558469321. The cubic root of 431378604 is about 755.5899977219.

The spelling of 431378604 in words is "four hundred thirty-one million, three hundred seventy-eight thousand, six hundred four".