31226222 has 16 divisors (see below), whose sum is σ = 48541680. Its totient is φ = 15055872.

The previous prime is 31226219. The next prime is 31226227. The reversal of 31226222 is 22262213.

It is a junction number, because it is equal to n+sod(n) for n = 31226194 and 31226203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31226227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3758 + ... + 8750.

It is an arithmetic number, because the mean of its divisors is an integer number (3033855).

Almost surely, 2^31226222 is an apocalyptic number.

31226222 is a deficient number, since it is larger than the sum of its proper divisors (17315458).

31226222 is a wasteful number, since it uses less digits than its factorization.

31226222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107.

The product of its digits is 576, while the sum is 20.

The square root of 31226222 is about 5588.0427700582. The cubic root of 31226222 is about 314.9003531288.

Adding to 31226222 its reverse (22262213), we get a palindrome (53488435).

The spelling of 31226222 in words is "thirty-one million, two hundred twenty-six thousand, two hundred twenty-two".