40306210631 has 2 divisors, whose sum is σ = 40306210632. Its totient is φ = 40306210630.

The previous prime is 40306210627. The next prime is 40306210661. The reversal of 40306210631 is 13601260304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40306210631 - 2² = 40306210627 is a prime.

It is a super-2 number, since 2×40306210631² (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 40306210631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40306210601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20153105315 + 20153105316.

It is an arithmetic number, because the mean of its divisors is an integer number (20153105316).

Almost surely, 2^40306210631 is an apocalyptic number.

40306210631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40306210631 is an equidigital number, since it uses as much as digits as its factorization.

40306210631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 40306210631 its reverse (13601260304), we get a palindrome (53907470935).

The spelling of 40306210631 in words is "forty billion, three hundred six million, two hundred ten thousand, six hundred thirty-one".