31222023 has 16 divisors (see below), whose sum is σ = 47761920. Its totient is φ = 17771616.

The previous prime is 31222021. The next prime is 31222091. The reversal of 31222023 is 32022213.

It is not a de Polignac number, because 31222023 - 2¹ = 31222021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31221993 and 31222011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222021) 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 15 ways as a sum of consecutive naturals, for example, 2886 + ... + 8412.

It is an arithmetic number, because the mean of its divisors is an integer number (2985120).

Almost surely, 2^31222023 is an apocalyptic number.

31222023 is a deficient number, since it is larger than the sum of its proper divisors (16539897).

31222023 is a wasteful number, since it uses less digits than its factorization.

31222023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 31222023 is about 5587.6670444829. The cubic root of 31222023 is about 314.8862375792.

Adding to 31222023 its reverse (32022213), we get a palindrome (63244236).

The spelling of 31222023 in words is "thirty-one million, two hundred twenty-two thousand, twenty-three".