431873140 has 12 divisors (see below), whose sum is σ = 906933636. Its totient is φ = 172749248.

The previous prime is 431873119. The next prime is 431873159. The reversal of 431873140 is 41378134.

It can be written as a sum of positive squares in 2 ways, for example, as 103103716 + 328769424 = 10154^2 + 18132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10796809 + ... + 10796848.

It is an arithmetic number, because the mean of its divisors is an integer number (75577803).

Almost surely, 2^431873140 is an apocalyptic number.

It is an amenable number.

431873140 is an abundant number, since it is smaller than the sum of its proper divisors (475060496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431873140 is a wasteful number, since it uses less digits than its factorization.

431873140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21593666 (or 21593664 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 431873140 is about 20781.5576894515. The cubic root of 431873140 is about 755.8786256627.

The spelling of 431873140 in words is "four hundred thirty-one million, eight hundred seventy-three thousand, one hundred forty".