31712323 has 4 divisors (see below), whose sum is σ = 32249880. Its totient is φ = 31174768.

The previous prime is 31712321. The next prime is 31712347. The reversal of 31712323 is 32321713.

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 31712323 - 2¹ = 31712321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31712294 and 31712303.

It is not an unprimeable number, because it can be changed into a prime (31712321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268690 + ... + 268807.

It is an arithmetic number, because the mean of its divisors is an integer number (8062470).

Almost surely, 2^31712323 is an apocalyptic number.

31712323 is a deficient number, since it is larger than the sum of its proper divisors (537557).

31712323 is an equidigital number, since it uses as much as digits as its factorization.

31712323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537556.

The product of its digits is 756, while the sum is 22.

The square root of 31712323 is about 5631.3695492305. The cubic root of 31712323 is about 316.5259727102.

The spelling of 31712323 in words is "thirty-one million, seven hundred twelve thousand, three hundred twenty-three".