423410311561 has 2 divisors, whose sum is σ = 423410311562. Its totient is φ = 423410311560.

The previous prime is 423410311439. The next prime is 423410311601. The reversal of 423410311561 is 165113014324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278910734400 + 144499577161 = 528120^2 + 380131^2 .

It is a cyclic number.

It is not a de Polignac number, because 423410311561 - 2³³ = 414820376969 is a prime.

It is not a weakly prime, because it can be changed into another prime (423416311561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211705155780 + 211705155781.

It is an arithmetic number, because the mean of its divisors is an integer number (211705155781).

Almost surely, 2^423410311561 is an apocalyptic number.

It is an amenable number.

423410311561 is a deficient number, since it is larger than the sum of its proper divisors (1).

423410311561 is an equidigital number, since it uses as much as digits as its factorization.

423410311561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 423410311561 its reverse (165113014324), we get a palindrome (588523325885).

The spelling of 423410311561 in words is "four hundred twenty-three billion, four hundred ten million, three hundred eleven thousand, five hundred sixty-one".