40342631 has 8 divisors (see below), whose sum is σ = 47047200. Its totient is φ = 34579104.

The previous prime is 40342573. The next prime is 40342633. The reversal of 40342631 is 13624304.

It is a happy number.

It is not a de Polignac number, because 40342631 - 2¹⁰ = 40341607 is a prime.

It is a super-2 number, since 2×40342631² = 3255055752004322, 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 = 40342597 and 40342606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58466 + ... + 59151.

It is an arithmetic number, because the mean of its divisors is an integer number (5880900).

Almost surely, 2^40342631 is an apocalyptic number.

40342631 is a deficient number, since it is larger than the sum of its proper divisors (6704569).

40342631 is an equidigital number, since it uses as much as digits as its factorization.

40342631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117638 (or 117624 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40342631 is about 6351.5849203171. The cubic root of 40342631 is about 342.9688990265.

Adding to 40342631 its reverse (13624304), we get a palindrome (53966935).

It can be divided in two parts, 403 and 42631, that added together give a palindrome (43034).

The spelling of 40342631 in words is "forty million, three hundred forty-two thousand, six hundred thirty-one".