431234242081 has 2 divisors, whose sum is σ = 431234242082. Its totient is φ = 431234242080.

The previous prime is 431234242037. The next prime is 431234242123. The reversal of 431234242081 is 180242432134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422630010000 + 8604232081 = 650100^2 + 92759^2 .

It is a cyclic number.

It is not a de Polignac number, because 431234242081 - 2²¹ = 431232144929 is a prime.

It is a super-2 number, since 2×431234242081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431234242181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215617121040 + 215617121041.

It is an arithmetic number, because the mean of its divisors is an integer number (215617121041).

Almost surely, 2^431234242081 is an apocalyptic number.

It is an amenable number.

431234242081 is a deficient number, since it is larger than the sum of its proper divisors (1).

431234242081 is an equidigital number, since it uses as much as digits as its factorization.

431234242081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 431234242081 in words is "four hundred thirty-one billion, two hundred thirty-four million, two hundred forty-two thousand, eighty-one".