40117331 has 4 divisors (see below), whose sum is σ = 42477192. Its totient is φ = 37757472.

The previous prime is 40117327. The next prime is 40117333. The reversal of 40117331 is 13371104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40117331 - 2² = 40117327 is a prime.

It is a super-2 number, since 2×40117331² = 3218800493127122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40117333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179905 + ... + 1179938.

It is an arithmetic number, because the mean of its divisors is an integer number (10619298).

Almost surely, 2^40117331 is an apocalyptic number.

40117331 is a deficient number, since it is larger than the sum of its proper divisors (2359861).

40117331 is a wasteful number, since it uses less digits than its factorization.

40117331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359860.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 40117331 is about 6333.8243581583. The cubic root of 40117331 is about 342.3292515621.

Adding to 40117331 its reverse (13371104), we get a palindrome (53488435).

The spelling of 40117331 in words is "forty million, one hundred seventeen thousand, three hundred thirty-one".