40068231 has 32 divisors (see below), whose sum is σ = 65049600. Its totient is φ = 21887712.

The previous prime is 40068229. The next prime is 40068241. The reversal of 40068231 is 13286004.

It is a happy number.

It is not a de Polignac number, because 40068231 - 2¹ = 40068229 is a prime.

It is a super-2 number, since 2×40068231² = 3210926270938722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40068241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22821 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (2032800).

Almost surely, 2^40068231 is an apocalyptic number.

40068231 is a deficient number, since it is larger than the sum of its proper divisors (24981369).

40068231 is a wasteful number, since it uses less digits than its factorization.

40068231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 40068231 is about 6329.9471561775. The cubic root of 40068231 is about 342.1895344889.

The spelling of 40068231 in words is "forty million, sixty-eight thousand, two hundred thirty-one".