31224122 has 4 divisors (see below), whose sum is σ = 46836186. Its totient is φ = 15612060.

The previous prime is 31224113. The next prime is 31224199. The reversal of 31224122 is 22142213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28504921 + 2719201 = 5339^2 + 1649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31224122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7806029 + ... + 7806032.

Almost surely, 2^31224122 is an apocalyptic number.

31224122 is a deficient number, since it is larger than the sum of its proper divisors (15612064).

31224122 is a wasteful number, since it uses less digits than its factorization.

31224122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15612063.

The product of its digits is 192, while the sum is 17.

The square root of 31224122 is about 5587.8548656886. The cubic root of 31224122 is about 314.8932938314.

Adding to 31224122 its reverse (22142213), we get a palindrome (53366335).

The spelling of 31224122 in words is "thirty-one million, two hundred twenty-four thousand, one hundred twenty-two".