31444222 has 8 divisors (see below), whose sum is σ = 48170016. Its totient is φ = 15387552.

The previous prime is 31444213. The next prime is 31444241. The reversal of 31444222 is 22244413.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31444193 and 31444202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167163 + ... + 167350.

It is an arithmetic number, because the mean of its divisors is an integer number (6021252).

Almost surely, 2^31444222 is an apocalyptic number.

31444222 is a deficient number, since it is larger than the sum of its proper divisors (16725794).

31444222 is a wasteful number, since it uses less digits than its factorization.

31444222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334562.

The product of its digits is 1536, while the sum is 22.

The square root of 31444222 is about 5607.5147792939. The cubic root of 31444222 is about 315.6314602736.

Adding to 31444222 its reverse (22244413), we get a palindrome (53688635).

The spelling of 31444222 in words is "thirty-one million, four hundred forty-four thousand, two hundred twenty-two".