40312223 has 4 divisors (see below), whose sum is σ = 46071120. Its totient is φ = 34553328.

The previous prime is 40312211. The next prime is 40312241. The reversal of 40312223 is 32221304.

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 40312223 - 2⁸ = 40311967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342223) 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, 2879438 + ... + 2879451.

It is an arithmetic number, because the mean of its divisors is an integer number (11517780).

Almost surely, 2^40312223 is an apocalyptic number.

40312223 is a deficient number, since it is larger than the sum of its proper divisors (5758897).

40312223 is an equidigital number, since it uses as much as digits as its factorization.

40312223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5758896.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40312223 is about 6349.1907358340. The cubic root of 40312223 is about 342.8827071629.

Adding to 40312223 its reverse (32221304), we get a palindrome (72533527).

The spelling of 40312223 in words is "forty million, three hundred twelve thousand, two hundred twenty-three".