431504545 has 16 divisors (see below), whose sum is σ = 540532368. Its totient is φ = 330359040.

The previous prime is 431504539. The next prime is 431504569. The reversal of 431504545 is 545405134.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8503056 + 423001489 = 2916^2 + 20567^2 .

It is not a de Polignac number, because 431504545 - 2³ = 431504537 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, 7834 + ... + 30403.

It is an arithmetic number, because the mean of its divisors is an integer number (33783273).

Almost surely, 2^431504545 is an apocalyptic number.

It is an amenable number.

431504545 is a deficient number, since it is larger than the sum of its proper divisors (109027823).

431504545 is a wasteful number, since it uses less digits than its factorization.

431504545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38340.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 431504545 is about 20772.6874765881. The cubic root of 431504545 is about 755.6635220768.

Adding to 431504545 its reverse (545405134), we get a palindrome (976909679).

The spelling of 431504545 in words is "four hundred thirty-one million, five hundred four thousand, five hundred forty-five".