40323023 has 4 divisors (see below), whose sum is σ = 43424808. Its totient is φ = 37221240.

The previous prime is 40323011. The next prime is 40323029. The reversal of 40323023 is 32032304.

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 40323023 - 2⁸ = 40322767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40322992 and 40323010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40323029) 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, 1550873 + ... + 1550898.

It is an arithmetic number, because the mean of its divisors is an integer number (10856202).

Almost surely, 2^40323023 is an apocalyptic number.

40323023 is a deficient number, since it is larger than the sum of its proper divisors (3101785).

40323023 is a wasteful number, since it uses less digits than its factorization.

40323023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101784.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 40323023 is about 6350.0411809688. The cubic root of 40323023 is about 342.9133248624.

Adding to 40323023 its reverse (32032304), we get a palindrome (72355327).

The spelling of 40323023 in words is "forty million, three hundred twenty-three thousand, twenty-three".