431265540 has 24 divisors (see below), whose sum is σ = 1207543680. Its totient is φ = 115004128.

The previous prime is 431265529. The next prime is 431265587. The reversal of 431265540 is 45562134.

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 = 431265498 and 431265507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3593820 + ... + 3593939.

It is an arithmetic number, because the mean of its divisors is an integer number (50314320).

Almost surely, 2^431265540 is an apocalyptic number.

It is an amenable number.

431265540 is an abundant number, since it is smaller than the sum of its proper divisors (776278140).

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

431265540 is a wasteful number, since it uses less digits than its factorization.

431265540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187771 (or 7187769 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 431265540 is about 20766.9338131560. The cubic root of 431265540 is about 755.5239787681.

The spelling of 431265540 in words is "four hundred thirty-one million, two hundred sixty-five thousand, five hundred forty".