42319783531 has 2 divisors, whose sum is σ = 42319783532. Its totient is φ = 42319783530.

The previous prime is 42319783511. The next prime is 42319783601. The reversal of 42319783531 is 13538791324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42319783531 - 2⁷ = 42319783403 is a prime.

It is a super-3 number, since 3×42319783531³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (42319783511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21159891765 + 21159891766.

It is an arithmetic number, because the mean of its divisors is an integer number (21159891766).

Almost surely, 2^42319783531 is an apocalyptic number.

42319783531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42319783531 is an equidigital number, since it uses as much as digits as its factorization.

42319783531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The spelling of 42319783531 in words is "forty-two billion, three hundred nineteen million, seven hundred eighty-three thousand, five hundred thirty-one".