431073730 has 16 divisors (see below), whose sum is σ = 777837240. Its totient is φ = 172006272.

The previous prime is 431073703. The next prime is 431073733. The reversal of 431073730 is 37370134.

It can be written as a sum of positive squares in 4 ways, for example, as 376476409 + 54597321 = 19403^2 + 7389^2 .

It is a super-2 number, since 2×431073730² = 371649121392225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431073733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48609 + ... + 56788.

Almost surely, 2^431073730 is an apocalyptic number.

431073730 is a deficient number, since it is larger than the sum of its proper divisors (346763510).

431073730 is a wasteful number, since it uses less digits than its factorization.

431073730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105813.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 431073730 is about 20762.3151406581. The cubic root of 431073730 is about 755.4119530124.

The spelling of 431073730 in words is "four hundred thirty-one million, seventy-three thousand, seven hundred thirty".