431480818 has 4 divisors (see below), whose sum is σ = 647221230. Its totient is φ = 215740408.

The previous prime is 431480813. The next prime is 431480831. The reversal of 431480818 is 818084134.

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., 329531409 + 101949409 = 18153^2 + 10097^2 .

It is not an unprimeable number, because it can be changed into a prime (431480813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107870203 + ... + 107870206.

Almost surely, 2^431480818 is an apocalyptic number.

431480818 is a deficient number, since it is larger than the sum of its proper divisors (215740412).

431480818 is a wasteful number, since it uses less digits than its factorization.

431480818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215740411.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 431480818 is about 20772.1163582337. The cubic root of 431480818 is about 755.6496713482.

The spelling of 431480818 in words is "four hundred thirty-one million, four hundred eighty thousand, eight hundred eighteen".