431134320321 has 12 divisors (see below), whose sum is σ = 625047546240. Its totient is φ = 286362277560.

The previous prime is 431134320251. The next prime is 431134320347. The reversal of 431134320321 is 123023431134.

It is a happy number.

431134320321 is a `hidden beast` number, since 4 + 3 + 1 + 13 + 4 + 320 + 321 = 666.

It is not a de Polignac number, because 431134320321 - 2⁷ = 431134320193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431134328321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88380981 + ... + 88385858.

It is an arithmetic number, because the mean of its divisors is an integer number (52087295520).

Almost surely, 2^431134320321 is an apocalyptic number.

It is an amenable number.

431134320321 is a deficient number, since it is larger than the sum of its proper divisors (193913225919).

431134320321 is a wasteful number, since it uses less digits than its factorization.

431134320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176767116 (or 176767113 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 431134320321 its reverse (123023431134), we get a palindrome (554157751455).

The spelling of 431134320321 in words is "four hundred thirty-one billion, one hundred thirty-four million, three hundred twenty thousand, three hundred twenty-one".