431133443231 has 2 divisors, whose sum is σ = 431133443232. Its totient is φ = 431133443230.

The previous prime is 431133443219. The next prime is 431133443261. The reversal of 431133443231 is 132344331134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431133443231 is a prime.

It is a super-2 number, since 2×431133443231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431133443261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215566721615 + 215566721616.

It is an arithmetic number, because the mean of its divisors is an integer number (215566721616).

Almost surely, 2^431133443231 is an apocalyptic number.

431133443231 is a deficient number, since it is larger than the sum of its proper divisors (1).

431133443231 is an equidigital number, since it uses as much as digits as its factorization.

431133443231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

Adding to 431133443231 its reverse (132344331134), we get a palindrome (563477774365).

The spelling of 431133443231 in words is "four hundred thirty-one billion, one hundred thirty-three million, four hundred forty-three thousand, two hundred thirty-one".