2031312222 has 16 divisors (see below), whose sum is σ = 4514027280. Its totient is φ = 677104056.

The previous prime is 2031312181. The next prime is 2031312233. The reversal of 2031312222 is 2222131302.

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 = 2031312195 and 2031312204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18808393 + ... + 18808500.

It is an arithmetic number, because the mean of its divisors is an integer number (282126705).

Almost surely, 2^2031312222 is an apocalyptic number.

2031312222 is an abundant number, since it is smaller than the sum of its proper divisors (2482715058).

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

2031312222 is a wasteful number, since it uses less digits than its factorization.

2031312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37616904 (or 37616898 counting only the distinct ones).

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

The square root of 2031312222 is about 45070.0812291258. The cubic root of 2031312222 is about 1266.4621860902.

Adding to 2031312222 its reverse (2222131302), we get a palindrome (4253443524).

The spelling of 2031312222 in words is "two billion, thirty-one million, three hundred twelve thousand, two hundred twenty-two".