40611631 has 2 divisors, whose sum is σ = 40611632. Its totient is φ = 40611630.

The previous prime is 40611617. The next prime is 40611653. The reversal of 40611631 is 13611604.

It is a happy number.

It is an a-pointer prime, because the next prime (40611653) can be obtained adding 40611631 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40611631 is a prime.

It is a super-2 number, since 2×40611631² = 3298609144960322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40611331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20305815 + 20305816.

It is an arithmetic number, because the mean of its divisors is an integer number (20305816).

Almost surely, 2^40611631 is an apocalyptic number.

40611631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40611631 is an equidigital number, since it uses as much as digits as its factorization.

40611631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40611631 is about 6372.7255550510. The cubic root of 40611631 is about 343.7295033068.

The spelling of 40611631 in words is "forty million, six hundred eleven thousand, six hundred thirty-one".