2231311320212 has 48 divisors (see below), whose sum is σ = 4232400825744. Its totient is φ = 1023176448000.

The previous prime is 2231311320197. The next prime is 2231311320223. The reversal of 2231311320212 is 2120231131322.

It can be written as a sum of positive squares in 8 ways, for example, as 47731762576 + 2183579557636 = 218476^2 + 1477694^2 .

It is a super-3 number, since 3×2231311320212³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9874412 + ... + 10097852.

It is an arithmetic number, because the mean of its divisors is an integer number (88175017203).

Almost surely, 2^{2231311320212} is an apocalyptic number.

It is an amenable number.

2231311320212 is a deficient number, since it is larger than the sum of its proper divisors (2001089505532).

2231311320212 is a wasteful number, since it uses less digits than its factorization.

2231311320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224700 (or 224698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2231311320212 its reverse (2120231131322), we get a palindrome (4351542451534).

The spelling of 2231311320212 in words is "two trillion, two hundred thirty-one billion, three hundred eleven million, three hundred twenty thousand, two hundred twelve".