2211031312 has 30 divisors (see below), whose sum is σ = 4983282798. Its totient is φ = 947584512.

The previous prime is 2211031309. The next prime is 2211031391. The reversal of 2211031312 is 2131301122.

It can be written as a sum of positive squares in only one way, i.e., 2126685456 + 84345856 = 46116^2 + 9184^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1409313 + ... + 1410880.

Almost surely, 2^2211031312 is an apocalyptic number.

It is an amenable number.

2211031312 is an abundant number, since it is smaller than the sum of its proper divisors (2772251486).

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

2211031312 is a wasteful number, since it uses less digits than its factorization.

2211031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820215 (or 2820202 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2211031312 is about 47021.6047365464. The cubic root of 2211031312 is about 1302.7616463206.

Adding to 2211031312 its reverse (2131301122), we get a palindrome (4342332434).

The spelling of 2211031312 in words is "two billion, two hundred eleven million, thirty-one thousand, three hundred twelve".