40502331 has 6 divisors (see below), whose sum is σ = 58503380. Its totient is φ = 27001548.

The previous prime is 40502323. The next prime is 40502339. The reversal of 40502331 is 13320504.

It is an interprime number because it is at equal distance from previous prime (40502323) and next prime (40502339).

It is not a de Polignac number, because 40502331 - 2³ = 40502323 is a prime.

It is a super-2 number, since 2×40502331² = 3280877632867122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40502339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2250121 + ... + 2250138.

Almost surely, 2^40502331 is an apocalyptic number.

40502331 is a deficient number, since it is larger than the sum of its proper divisors (18001049).

40502331 is a wasteful number, since it uses less digits than its factorization.

40502331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500265 (or 4500262 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 40502331 is about 6364.1441687001. The cubic root of 40502331 is about 343.4208611060.

Adding to 40502331 its reverse (13320504), we get a palindrome (53822835).

The spelling of 40502331 in words is "forty million, five hundred two thousand, three hundred thirty-one".