2331311212 has 48 divisors (see below), whose sum is σ = 4235626080. Its totient is φ = 1122181632.

The previous prime is 2331311183. The next prime is 2331311219. The reversal of 2331311212 is 2121131332.

It is a self number, because there is not a number n which added to its sum of digits gives 2331311212.

It is not an unprimeable number, because it can be changed into a prime (2331311219) 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, 2961883 + ... + 2962669.

It is an arithmetic number, because the mean of its divisors is an integer number (88242210).

Almost surely, 2^2331311212 is an apocalyptic number.

It is an amenable number.

2331311212 is a deficient number, since it is larger than the sum of its proper divisors (1904314868).

2331311212 is a wasteful number, since it uses less digits than its factorization.

2331311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1088 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 2331311212 is about 48283.6536728529. The cubic root of 2331311212 is about 1325.9691425412.

Adding to 2331311212 its reverse (2121131332), we get a palindrome (4452442544).

The spelling of 2331311212 in words is "two billion, three hundred thirty-one million, three hundred eleven thousand, two hundred twelve".