431978607 has 12 divisors (see below), whose sum is σ = 626275104. Its totient is φ = 286921440.

The previous prime is 431978593. The next prime is 431978609. The reversal of 431978607 is 706879134.

431978607 is a `hidden beast` number, since 4 + 31 + 9 + 7 + 8 + 607 = 666.

It is not a de Polignac number, because 431978607 - 2⁶ = 431978543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431978609) 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, 86118 + ... + 90995.

It is an arithmetic number, because the mean of its divisors is an integer number (52189592).

Almost surely, 2^431978607 is an apocalyptic number.

431978607 is a deficient number, since it is larger than the sum of its proper divisors (194296497).

431978607 is a wasteful number, since it uses less digits than its factorization.

431978607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177390 (or 177387 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 431978607 is about 20784.0950488589. The cubic root of 431978607 is about 755.9401512629.

The spelling of 431978607 in words is "four hundred thirty-one million, nine hundred seventy-eight thousand, six hundred seven".