31222252 has 12 divisors (see below), whose sum is σ = 54680080. Its totient is φ = 15599376.

The previous prime is 31222249. The next prime is 31222253. The reversal of 31222252 is 25222213.

It is not an unprimeable number, because it can be changed into a prime (31222253) 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, 6193 + ... + 10039.

Almost surely, 2^31222252 is an apocalyptic number.

It is an amenable number.

31222252 is a deficient number, since it is larger than the sum of its proper divisors (23457828).

31222252 is a wasteful number, since it uses less digits than its factorization.

31222252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880 (or 5878 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 31222252 is about 5587.6875360027. The cubic root of 31222252 is about 314.8870074287.

Adding to 31222252 its reverse (25222213), we get a palindrome (56444465).

The spelling of 31222252 in words is "thirty-one million, two hundred twenty-two thousand, two hundred fifty-two".