31012232222 has 32 divisors (see below), whose sum is σ = 48687091200. Its totient is φ = 14796417888.

The previous prime is 31012232219. The next prime is 31012232257. The reversal of 31012232222 is 22223221013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31012232194 and 31012232203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718743 + ... + 2730125.

It is an arithmetic number, because the mean of its divisors is an integer number (1521471600).

Almost surely, 2^31012232222 is an apocalyptic number.

31012232222 is a deficient number, since it is larger than the sum of its proper divisors (17674858978).

31012232222 is a wasteful number, since it uses less digits than its factorization.

31012232222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11960.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31012232222 its reverse (22223221013), we get a palindrome (53235453235).

The spelling of 31012232222 in words is "thirty-one billion, twelve million, two hundred thirty-two thousand, two hundred twenty-two".