431999361 has 12 divisors (see below), whose sum is σ = 624762580. Its totient is φ = 287647200.

The previous prime is 431999303. The next prime is 431999369. The reversal of 431999361 is 163999134.

It can be written as a sum of positive squares in 2 ways, for example, as 164480625 + 267518736 = 12825^2 + 16356^2 .

It is not a de Polignac number, because 431999361 - 2⁷ = 431999233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431999369) 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, 21490 + ... + 36411.

Almost surely, 2^431999361 is an apocalyptic number.

It is an amenable number.

431999361 is a deficient number, since it is larger than the sum of its proper divisors (192763219).

431999361 is a wasteful number, since it uses less digits than its factorization.

431999361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58736 (or 58733 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 431999361 is about 20784.5943188699. The cubic root of 431999361 is about 755.9522572101.

The spelling of 431999361 in words is "four hundred thirty-one million, nine hundred ninety-nine thousand, three hundred sixty-one".