40023171 has 6 divisors (see below), whose sum is σ = 57811260. Its totient is φ = 26682108.

The previous prime is 40023167. The next prime is 40023173. The reversal of 40023171 is 17132004.

It is not a de Polignac number, because 40023171 - 2² = 40023167 is a prime.

It is a super-3 number, since 3×40023171³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40023173) 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, 2223501 + ... + 2223518.

It is an arithmetic number, because the mean of its divisors is an integer number (9635210).

Almost surely, 2^40023171 is an apocalyptic number.

40023171 is a deficient number, since it is larger than the sum of its proper divisors (17788089).

40023171 is a wasteful number, since it uses less digits than its factorization.

40023171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447025 (or 4447022 counting only the distinct ones).

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

The square root of 40023171 is about 6326.3868835221. The cubic root of 40023171 is about 342.0612130095.

Adding to 40023171 its reverse (17132004), we get a palindrome (57155175).

The spelling of 40023171 in words is "forty million, twenty-three thousand, one hundred seventy-one".