40202323 has 12 divisors (see below), whose sum is σ = 47591440. Its totient is φ = 33266016.

The previous prime is 40202317. The next prime is 40202333. The reversal of 40202323 is 32320204.

It is a de Polignac number, because none of the positive numbers 2^k-40202323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40202297 and 40202306.

It is not an unprimeable number, because it can be changed into a prime (40202333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2473 + ... + 9301.

Almost surely, 2^40202323 is an apocalyptic number.

40202323 is a deficient number, since it is larger than the sum of its proper divisors (7389117).

40202323 is an equidigital number, since it uses as much as digits as its factorization.

40202323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894 (or 6865 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 40202323 is about 6340.5301828790. The cubic root of 40202323 is about 342.5708323141.

Adding to 40202323 its reverse (32320204), we get a palindrome (72522527).

The spelling of 40202323 in words is "forty million, two hundred two thousand, three hundred twenty-three".