31323422 has 16 divisors (see below), whose sum is σ = 52345440. Its totient is φ = 13958112.

The previous prime is 31323403. The next prime is 31323431. The reversal of 31323422 is 22432313.

It is a junction number, because it is equal to n+sod(n) for n = 31323394 and 31323403.

It is a congruent number.

It is an unprimeable number.

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, 20018 + ... + 21525.

It is an arithmetic number, because the mean of its divisors is an integer number (3271590).

Almost surely, 2^31323422 is an apocalyptic number.

31323422 is a deficient number, since it is larger than the sum of its proper divisors (21022018).

31323422 is a wasteful number, since it uses less digits than its factorization.

31323422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41587.

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

The square root of 31323422 is about 5596.7331542606. The cubic root of 31323422 is about 315.2267519939.

Adding to 31323422 its reverse (22432313), we get a palindrome (53755735).

The spelling of 31323422 in words is "thirty-one million, three hundred twenty-three thousand, four hundred twenty-two".