431495040 has 64 divisors (see below), whose sum is σ = 1375396560. Its totient is φ = 115064832.

The previous prime is 431494967. The next prime is 431495047. The reversal of 431495040 is 40594134.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 431494989 and 431495007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431495047) 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, 110449 + ... + 114288.

Almost surely, 2^431495040 is an apocalyptic number.

431495040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431495040 is an abundant number, since it is smaller than the sum of its proper divisors (943901520).

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

431495040 is a wasteful number, since it uses less digits than its factorization.

431495040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224759 (or 224747 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 431495040 is about 20772.4586893319. The cubic root of 431495040 is about 755.6579735570.

The spelling of 431495040 in words is "four hundred thirty-one million, four hundred ninety-five thousand, forty".