31194222 has 16 divisors (see below), whose sum is σ = 63141120. Its totient is φ = 10272632.

The previous prime is 31194217. The next prime is 31194239. The reversal of 31194222 is 22249113.

It is a junction number, because it is equal to n+sod(n) for n = 31194192 and 31194201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30822 + ... + 31817.

It is an arithmetic number, because the mean of its divisors is an integer number (3946320).

Almost surely, 2^31194222 is an apocalyptic number.

31194222 is an abundant number, since it is smaller than the sum of its proper divisors (31946898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31194222 is a wasteful number, since it uses less digits than its factorization.

31194222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62727.

The product of its digits is 864, while the sum is 24.

The square root of 31194222 is about 5585.1787795916. The cubic root of 31194222 is about 314.7927485283.

The spelling of 31194222 in words is "thirty-one million, one hundred ninety-four thousand, two hundred twenty-two".