431883926521 has 2 divisors, whose sum is σ = 431883926522. Its totient is φ = 431883926520.

The previous prime is 431883926491. The next prime is 431883926527. The reversal of 431883926521 is 125629388134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426748627600 + 5135298921 = 653260^2 + 71661^2 .

It is a cyclic number.

It is not a de Polignac number, because 431883926521 - 2⁵ = 431883926489 is a prime.

It is not a weakly prime, because it can be changed into another prime (431883926527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215941963260 + 215941963261.

It is an arithmetic number, because the mean of its divisors is an integer number (215941963261).

Almost surely, 2^431883926521 is an apocalyptic number.

It is an amenable number.

431883926521 is a deficient number, since it is larger than the sum of its proper divisors (1).

431883926521 is an equidigital number, since it uses as much as digits as its factorization.

431883926521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 52.

The spelling of 431883926521 in words is "four hundred thirty-one billion, eight hundred eighty-three million, nine hundred twenty-six thousand, five hundred twenty-one".