3131212222 has 16 divisors (see below), whose sum is σ = 4711906080. Its totient is φ = 1560585472.

The previous prime is 3131212213. The next prime is 3131212229. The reversal of 3131212222 is 2222121313.

3131212222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3131212222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198854 + ... + 1201462.

It is an arithmetic number, because the mean of its divisors is an integer number (294494130).

Almost surely, 2^3131212222 is an apocalyptic number.

3131212222 is a deficient number, since it is larger than the sum of its proper divisors (1580693858).

3131212222 is a wasteful number, since it uses less digits than its factorization.

3131212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307.

The product of its digits is 288, while the sum is 19.

The square root of 3131212222 is about 55957.2356536668. The cubic root of 3131212222 is about 1462.9770090547.

Adding to 3131212222 its reverse (2222121313), we get a palindrome (5353333535).

Subtracting from 3131212222 its reverse (2222121313), we obtain a palindrome (909090909).

It can be divided in two parts, 31312 and 12222, that added together give a palindrome (43534).

The spelling of 3131212222 in words is "three billion, one hundred thirty-one million, two hundred twelve thousand, two hundred twenty-two".