431521466 has 4 divisors (see below), whose sum is σ = 647282202. Its totient is φ = 215760732.

The previous prime is 431521451. The next prime is 431521471. The reversal of 431521466 is 664125134.

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

It can be written as a sum of positive squares in only one way, i.e., 431434441 + 87025 = 20771^2 + 295^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107880365 + ... + 107880368.

Almost surely, 2^431521466 is an apocalyptic number.

431521466 is a deficient number, since it is larger than the sum of its proper divisors (215760736).

431521466 is a wasteful number, since it uses less digits than its factorization.

431521466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215760735.

The product of its digits is 17280, while the sum is 32.

The square root of 431521466 is about 20773.0947622159. The cubic root of 431521466 is about 755.6733994662.

The spelling of 431521466 in words is "four hundred thirty-one million, five hundred twenty-one thousand, four hundred sixty-six".