431072540 has 12 divisors (see below), whose sum is σ = 905252376. Its totient is φ = 172429008.

The previous prime is 431072527. The next prime is 431072557. The reversal of 431072540 is 45270134.

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, 10776794 + ... + 10776833.

It is an arithmetic number, because the mean of its divisors is an integer number (75437698).

Almost surely, 2^431072540 is an apocalyptic number.

It is an amenable number.

431072540 is an abundant number, since it is smaller than the sum of its proper divisors (474179836).

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

431072540 is a wasteful number, since it uses less digits than its factorization.

431072540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21553636 (or 21553634 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 431072540 is about 20762.2864829479. The cubic root of 431072540 is about 755.4112578946.

The spelling of 431072540 in words is "four hundred thirty-one million, seventy-two thousand, five hundred forty".