31144222 has 8 divisors (see below), whose sum is σ = 46740456. Its totient is φ = 15564072.

The previous prime is 31144207. The next prime is 31144241. The reversal of 31144222 is 22244113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31144222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4113 + ... + 8899.

It is an arithmetic number, because the mean of its divisors is an integer number (5842557).

Almost surely, 2^31144222 is an apocalyptic number.

31144222 is a deficient number, since it is larger than the sum of its proper divisors (15596234).

31144222 is a wasteful number, since it uses less digits than its factorization.

31144222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042.

The product of its digits is 384, while the sum is 19.

The square root of 31144222 is about 5580.7008520436. The cubic root of 31144222 is about 314.6244689197.

Adding to 31144222 its reverse (22244113), we get a palindrome (53388335).

The spelling of 31144222 in words is "thirty-one million, one hundred forty-four thousand, two hundred twenty-two".