31013222 has 8 divisors (see below), whose sum is σ = 46560096. Its totient is φ = 15493192.

The previous prime is 31013221. The next prime is 31013233. The reversal of 31013222 is 22231013.

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 = 31013197 and 31013206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013221) 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, 3518 + ... + 8625.

It is an arithmetic number, because the mean of its divisors is an integer number (5820012).

Almost surely, 2^31013222 is an apocalyptic number.

31013222 is a deficient number, since it is larger than the sum of its proper divisors (15546874).

31013222 is a wasteful number, since it uses less digits than its factorization.

31013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13422.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31013222 is about 5568.9516069005. The cubic root of 31013222 is about 314.1827205415.

Adding to 31013222 its reverse (22231013), we get a palindrome (53244235).

It can be divided in two parts, 31013 and 222, that multiplied together give a palindrome (6884886).

The spelling of 31013222 in words is "thirty-one million, thirteen thousand, two hundred twenty-two".