40253631 has 8 divisors (see below), whose sum is σ = 58550784. Its totient is φ = 24396120.

The previous prime is 40253627. The next prime is 40253687. The reversal of 40253631 is 13635204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40253631 - 2² = 40253627 is a prime.

It is a super-2 number, since 2×40253631² = 3240709617368322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40253231) 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, 609871 + ... + 609936.

It is an arithmetic number, because the mean of its divisors is an integer number (7318848).

Almost surely, 2^40253631 is an apocalyptic number.

40253631 is a deficient number, since it is larger than the sum of its proper divisors (18297153).

40253631 is a wasteful number, since it uses less digits than its factorization.

40253631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219821.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 40253631 is about 6344.5749266598. The cubic root of 40253631 is about 342.7165050920.

Adding to 40253631 its reverse (13635204), we get a palindrome (53888835).

The spelling of 40253631 in words is "forty million, two hundred fifty-three thousand, six hundred thirty-one".