40602042631 has 2 divisors, whose sum is σ = 40602042632. Its totient is φ = 40602042630.

The previous prime is 40602042629. The next prime is 40602042707. The reversal of 40602042631 is 13624020604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40602042631 - 2¹ = 40602042629 is a prime.

It is a super-2 number, since 2×40602042631² (a number of 22 digits) contains 22 as substring.

Together with 40602042629, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40602042631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40602042031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20301021315 + 20301021316.

It is an arithmetic number, because the mean of its divisors is an integer number (20301021316).

Almost surely, 2^40602042631 is an apocalyptic number.

40602042631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40602042631 is an equidigital number, since it uses as much as digits as its factorization.

40602042631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 40602042631 in words is "forty billion, six hundred two million, forty-two thousand, six hundred thirty-one".