31304422 has 8 divisors (see below), whose sum is σ = 47441016. Its totient is φ = 15490752.

The previous prime is 31304417. The next prime is 31304423. The reversal of 31304422 is 22440313.

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 31304422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80488 + ... + 80875.

It is an arithmetic number, because the mean of its divisors is an integer number (5930127).

Almost surely, 2^31304422 is an apocalyptic number.

31304422 is a deficient number, since it is larger than the sum of its proper divisors (16136594).

31304422 is a wasteful number, since it uses less digits than its factorization.

31304422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161462.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 31304422 is about 5595.0354779930. The cubic root of 31304422 is about 315.1630028960.

Adding to 31304422 its reverse (22440313), we get a palindrome (53744735).

The spelling of 31304422 in words is "thirty-one million, three hundred four thousand, four hundred twenty-two".