3131022222 has 32 divisors (see below), whose sum is σ = 7025391360. Its totient is φ = 1033539480.

The previous prime is 3131022211. The next prime is 3131022229. The reversal of 3131022222 is 2222201313.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3131022195 and 3131022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131022229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275904 + ... + 287027.

It is an arithmetic number, because the mean of its divisors is an integer number (219543480).

Almost surely, 2^3131022222 is an apocalyptic number.

3131022222 is an abundant number, since it is smaller than the sum of its proper divisors (3894369138).

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

3131022222 is a wasteful number, since it uses less digits than its factorization.

3131022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563045 (or 563039 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3131022222 is about 55955.5379028743. The cubic root of 3131022222 is about 1462.9474176127.

Adding to 3131022222 its reverse (2222201313), we get a palindrome (5353223535).

The spelling of 3131022222 in words is "three billion, one hundred thirty-one million, twenty-two thousand, two hundred twenty-two".