423130440431 has 2 divisors, whose sum is σ = 423130440432. Its totient is φ = 423130440430.

The previous prime is 423130440373. The next prime is 423130440437. The reversal of 423130440431 is 134044031324.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423130440431 - 2²⁶ = 423063331567 is a prime.

It is a super-2 number, since 2×423130440431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423130440394 and 423130440403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423130440437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211565220215 + 211565220216.

It is an arithmetic number, because the mean of its divisors is an integer number (211565220216).

Almost surely, 2^423130440431 is an apocalyptic number.

423130440431 is a deficient number, since it is larger than the sum of its proper divisors (1).

423130440431 is an equidigital number, since it uses as much as digits as its factorization.

423130440431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 423130440431 its reverse (134044031324), we get a palindrome (557174471755).

The spelling of 423130440431 in words is "four hundred twenty-three billion, one hundred thirty million, four hundred forty thousand, four hundred thirty-one".