31713323 has 4 divisors (see below), whose sum is σ = 31734120. Its totient is φ = 31692528.

The previous prime is 31713307. The next prime is 31713373. The reversal of 31713323 is 32331713.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32331713 = 997 ⋅32429.

It is a cyclic number.

It is not a de Polignac number, because 31713323 - 2⁴ = 31713307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31713373) 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, 7913 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (7933530).

Almost surely, 2^31713323 is an apocalyptic number.

31713323 is a deficient number, since it is larger than the sum of its proper divisors (20797).

31713323 is a wasteful number, since it uses less digits than its factorization.

31713323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796.

The product of its digits is 1134, while the sum is 23.

The square root of 31713323 is about 5631.4583368786. The cubic root of 31713323 is about 316.5292997307.

The spelling of 31713323 in words is "thirty-one million, seven hundred thirteen thousand, three hundred twenty-three".