40017231 has 6 divisors (see below), whose sum is σ = 57802680. Its totient is φ = 26678148.

The previous prime is 40017227. The next prime is 40017283. The reversal of 40017231 is 13271004.

It is not a de Polignac number, because 40017231 - 2² = 40017227 is a prime.

It is a super-3 number, since 3×40017231³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40017221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2223171 + ... + 2223188.

It is an arithmetic number, because the mean of its divisors is an integer number (9633780).

Almost surely, 2^40017231 is an apocalyptic number.

40017231 is a deficient number, since it is larger than the sum of its proper divisors (17785449).

40017231 is a wasteful number, since it uses less digits than its factorization.

40017231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446365 (or 4446362 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 40017231 is about 6325.9174038237. The cubic root of 40017231 is about 342.0442899448.

Adding to 40017231 its reverse (13271004), we get a palindrome (53288235).

The spelling of 40017231 in words is "forty million, seventeen thousand, two hundred thirty-one".