431129065 has 16 divisors (see below), whose sum is σ = 522920592. Its totient is φ = 341213184.

The previous prime is 431129047. The next prime is 431129077. The reversal of 431129065 is 560921134.

It can be written as a sum of positive squares in 8 ways, for example, as 7551504 + 423577561 = 2748^2 + 20581^2 .

It is a cyclic number.

It is not a de Polignac number, because 431129065 - 2⁵ = 431129033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200677 + ... + 202813.

It is an arithmetic number, because the mean of its divisors is an integer number (32682537).

Almost surely, 2^431129065 is an apocalyptic number.

It is an amenable number.

431129065 is a deficient number, since it is larger than the sum of its proper divisors (91791527).

431129065 is a wasteful number, since it uses less digits than its factorization.

431129065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 431129065 is about 20763.6476805016. The cubic root of 431129065 is about 755.4442745768. Note that the first 3 decimals are identical.

The spelling of 431129065 in words is "four hundred thirty-one million, one hundred twenty-nine thousand, sixty-five".