42982915631 has 2 divisors, whose sum is σ = 42982915632. Its totient is φ = 42982915630.

The previous prime is 42982915607. The next prime is 42982915691. The reversal of 42982915631 is 13651928924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42982915631 - 2¹⁸ = 42982653487 is a prime.

It is a super-2 number, since 2×42982915631² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42982915631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42982915601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21491457815 + 21491457816.

It is an arithmetic number, because the mean of its divisors is an integer number (21491457816).

Almost surely, 2^42982915631 is an apocalyptic number.

42982915631 is a deficient number, since it is larger than the sum of its proper divisors (1).

42982915631 is an equidigital number, since it uses as much as digits as its factorization.

42982915631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The spelling of 42982915631 in words is "forty-two billion, nine hundred eighty-two million, nine hundred fifteen thousand, six hundred thirty-one".