31342223 has 8 divisors (see below), whose sum is σ = 34625280. Its totient is φ = 28131480.

The previous prime is 31342217. The next prime is 31342231. The reversal of 31342223 is 32224313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31342223 - 2⁶ = 31342159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31342195 and 31342204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17165 + ... + 18902.

It is an arithmetic number, because the mean of its divisors is an integer number (4328160).

Almost surely, 2^31342223 is an apocalyptic number.

31342223 is a deficient number, since it is larger than the sum of its proper divisors (3283057).

31342223 is a wasteful number, since it uses less digits than its factorization.

31342223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36157.

The product of its digits is 864, while the sum is 20.

The square root of 31342223 is about 5598.4125428553. The cubic root of 31342223 is about 315.2898080334.

Adding to 31342223 its reverse (32224313), we get a palindrome (63566536).

The spelling of 31342223 in words is "thirty-one million, three hundred forty-two thousand, two hundred twenty-three".