431133443261 has 2 divisors, whose sum is σ = 431133443262. Its totient is φ = 431133443260.

The previous prime is 431133443231. The next prime is 431133443309. The reversal of 431133443261 is 162344331134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426369820900 + 4763622361 = 652970^2 + 69019^2 .

It is a cyclic number.

It is not a de Polignac number, because 431133443261 - 2⁶ = 431133443197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431133443231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215566721630 + 215566721631.

It is an arithmetic number, because the mean of its divisors is an integer number (215566721631).

Almost surely, 2^431133443261 is an apocalyptic number.

It is an amenable number.

431133443261 is a deficient number, since it is larger than the sum of its proper divisors (1).

431133443261 is an equidigital number, since it uses as much as digits as its factorization.

431133443261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 35.

Adding to 431133443261 its reverse (162344331134), we get a palindrome (593477774395).

The spelling of 431133443261 in words is "four hundred thirty-one billion, one hundred thirty-three million, four hundred forty-three thousand, two hundred sixty-one".