40273631 has 2 divisors, whose sum is σ = 40273632. Its totient is φ = 40273630.

The previous prime is 40273627. The next prime is 40273643. The reversal of 40273631 is 13637204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40273631 - 2² = 40273627 is a prime.

It is a super-2 number, since 2×40273631² = 3243930707848322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40273631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40273601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20136815 + 20136816.

It is an arithmetic number, because the mean of its divisors is an integer number (20136816).

Almost surely, 2^40273631 is an apocalyptic number.

40273631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40273631 is an equidigital number, since it uses as much as digits as its factorization.

40273631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 40273631 is about 6346.1508806520. The cubic root of 40273631 is about 342.7732552125.

It can be divided in two parts, 40273 and 631, that added together give a palindrome (40904).

The spelling of 40273631 in words is "forty million, two hundred seventy-three thousand, six hundred thirty-one".