40231323 has 56 divisors (see below), whose sum is σ = 68465520. Its totient is φ = 23405760.

The previous prime is 40231319. The next prime is 40231339. The reversal of 40231323 is 32313204.

It is not a de Polignac number, because 40231323 - 2² = 40231319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40231296 and 40231305.

It is not an unprimeable number, because it can be changed into a prime (40231313) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 232465 + ... + 232637.

Almost surely, 2^40231323 is an apocalyptic number.

40231323 is a deficient number, since it is larger than the sum of its proper divisors (28234197).

40231323 is a wasteful number, since it uses less digits than its factorization.

40231323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40231323 is about 6342.8166456236. The cubic root of 40231323 is about 342.6531838267.

Adding to 40231323 its reverse (32313204), we get a palindrome (72544527).

The spelling of 40231323 in words is "forty million, two hundred thirty-one thousand, three hundred twenty-three".