31424323 has 4 divisors (see below), whose sum is σ = 35913520. Its totient is φ = 26935128.

The previous prime is 31424321. The next prime is 31424329. The reversal of 31424323 is 32342413.

It is a happy number.

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 31424323 - 2¹ = 31424321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31424294 and 31424303.

It is not an unprimeable number, because it can be changed into a prime (31424321) 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, 2244588 + ... + 2244601.

It is an arithmetic number, because the mean of its divisors is an integer number (8978380).

Almost surely, 2^31424323 is an apocalyptic number.

31424323 is a deficient number, since it is larger than the sum of its proper divisors (4489197).

31424323 is an equidigital number, since it uses as much as digits as its factorization.

31424323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489196.

The product of its digits is 1728, while the sum is 22.

The square root of 31424323 is about 5605.7401830624. The cubic root of 31424323 is about 315.5648653595.

Adding to 31424323 its reverse (32342413), we get a palindrome (63766736).

The spelling of 31424323 in words is "thirty-one million, four hundred twenty-four thousand, three hundred twenty-three".