40041631 has 4 divisors (see below), whose sum is σ = 45761872. Its totient is φ = 34321392.

The previous prime is 40041593. The next prime is 40041637. The reversal of 40041631 is 13614004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40041631 - 2¹³ = 40033439 is a prime.

It is a super-2 number, since 2×40041631² = 3206664426280322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40041599 and 40041608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40041637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2860110 + ... + 2860123.

It is an arithmetic number, because the mean of its divisors is an integer number (11440468).

Almost surely, 2^40041631 is an apocalyptic number.

40041631 is a deficient number, since it is larger than the sum of its proper divisors (5720241).

40041631 is an equidigital number, since it uses as much as digits as its factorization.

40041631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720240.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40041631 is about 6327.8456839591. The cubic root of 40041631 is about 342.1137948787.

Adding to 40041631 its reverse (13614004), we get a palindrome (53655635).

The spelling of 40041631 in words is "forty million, forty-one thousand, six hundred thirty-one".