40102631 has 2 divisors, whose sum is σ = 40102632. Its totient is φ = 40102630.

The previous prime is 40102619. The next prime is 40102651. The reversal of 40102631 is 13620104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40102631 - 2⁶ = 40102567 is a prime.

It is a super-2 number, since 2×40102631² = 3216442026244322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40102651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20051315 + 20051316.

It is an arithmetic number, because the mean of its divisors is an integer number (20051316).

Almost surely, 2^40102631 is an apocalyptic number.

40102631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40102631 is an equidigital number, since it uses as much as digits as its factorization.

40102631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40102631 is about 6332.6638154887. The cubic root of 40102631 is about 342.2874337688.

Adding to 40102631 its reverse (13620104), we get a palindrome (53722735).

The spelling of 40102631 in words is "forty million, one hundred two thousand, six hundred thirty-one".