40204631 has 2 divisors, whose sum is σ = 40204632. Its totient is φ = 40204630.

The previous prime is 40204603. The next prime is 40204639. The reversal of 40204631 is 13640204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40204631 - 2¹⁰ = 40203607 is a prime.

It is a super-2 number, since 2×40204631² = 3232824707692322, 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 (40204639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102315 + 20102316.

It is an arithmetic number, because the mean of its divisors is an integer number (20102316).

Almost surely, 2^40204631 is an apocalyptic number.

40204631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204631 is an equidigital number, since it uses as much as digits as its factorization.

40204631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40204631 is about 6340.7121839743. The cubic root of 40204631 is about 342.5773878089.

Adding to 40204631 its reverse (13640204), we get a palindrome (53844835).

The spelling of 40204631 in words is "forty million, two hundred four thousand, six hundred thirty-one".