42635407831 has 2 divisors, whose sum is σ = 42635407832. Its totient is φ = 42635407830.

The previous prime is 42635407753. The next prime is 42635407939. The reversal of 42635407831 is 13870453624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42635407831 - 2²¹ = 42633310679 is a prime.

It is a super-2 number, since 2×42635407831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42635407531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21317703915 + 21317703916.

It is an arithmetic number, because the mean of its divisors is an integer number (21317703916).

Almost surely, 2^42635407831 is an apocalyptic number.

42635407831 is a deficient number, since it is larger than the sum of its proper divisors (1).

42635407831 is an equidigital number, since it uses as much as digits as its factorization.

42635407831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 42635407831 in words is "forty-two billion, six hundred thirty-five million, four hundred seven thousand, eight hundred thirty-one".