56423407331 has 2 divisors, whose sum is σ = 56423407332. Its totient is φ = 56423407330.

The previous prime is 56423407277. The next prime is 56423407349. The reversal of 56423407331 is 13370432465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56423407331 is a prime.

It is a super-2 number, since 2×56423407331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56423407231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28211703665 + 28211703666.

It is an arithmetic number, because the mean of its divisors is an integer number (28211703666).

Almost surely, 2^56423407331 is an apocalyptic number.

56423407331 is a deficient number, since it is larger than the sum of its proper divisors (1).

56423407331 is an equidigital number, since it uses as much as digits as its factorization.

56423407331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 38.

Adding to 56423407331 its reverse (13370432465), we get a palindrome (69793839796).

The spelling of 56423407331 in words is "fifty-six billion, four hundred twenty-three million, four hundred seven thousand, three hundred thirty-one".