431290065256 has 32 divisors (see below), whose sum is σ = 809342236800. Its totient is φ = 215465564160.

The previous prime is 431290065181. The next prime is 431290065257. The reversal of 431290065256 is 652560092134.

It is a super-2 number, since 2×431290065256² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431290065257) 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, 75095521 + ... + 75101263.

It is an arithmetic number, because the mean of its divisors is an integer number (25291944900).

Almost surely, 2^431290065256 is an apocalyptic number.

It is an amenable number.

431290065256 is a deficient number, since it is larger than the sum of its proper divisors (378052171544).

431290065256 is a wasteful number, since it uses less digits than its factorization.

431290065256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929 (or 11925 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 431290065256 in words is "four hundred thirty-one billion, two hundred ninety million, sixty-five thousand, two hundred fifty-six".