42321513431 has 2 divisors, whose sum is σ = 42321513432. Its totient is φ = 42321513430.

The previous prime is 42321513391. The next prime is 42321513541. The reversal of 42321513431 is 13431512324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42321513431 - 2¹⁰ = 42321512407 is a prime.

It is a super-2 number, since 2×42321513431² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 42321513394 and 42321513403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42321543431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160756715 + 21160756716.

It is an arithmetic number, because the mean of its divisors is an integer number (21160756716).

Almost surely, 2^42321513431 is an apocalyptic number.

42321513431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42321513431 is an equidigital number, since it uses as much as digits as its factorization.

42321513431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The spelling of 42321513431 in words is "forty-two billion, three hundred twenty-one million, five hundred thirteen thousand, four hundred thirty-one".