40501631 has 2 divisors, whose sum is σ = 40501632. Its totient is φ = 40501630.

The previous prime is 40501619. The next prime is 40501649. The reversal of 40501631 is 13610504.

40501631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40501631 is a prime.

It is a super-2 number, since 2×40501631² = 3280764227320322, 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 (40501231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20250815 + 20250816.

It is an arithmetic number, because the mean of its divisors is an integer number (20250816).

Almost surely, 2^40501631 is an apocalyptic number.

40501631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40501631 is an equidigital number, since it uses as much as digits as its factorization.

40501631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 40501631 is about 6364.0891728511. The cubic root of 40501631 is about 343.4188826521.

The spelling of 40501631 in words is "forty million, five hundred one thousand, six hundred thirty-one".