1320312212 has 6 divisors (see below), whose sum is σ = 2310546378. Its totient is φ = 660156104.

The previous prime is 1320312199. The next prime is 1320312221. The reversal of 1320312212 is 2122130231.

It can be written as a sum of positive squares in only one way, i.e., 1169366416 + 150945796 = 34196^2 + 12286^2 .

It is a super-3 number, since 3×1320312212³ (a number of 28 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 as a sum of consecutive naturals, namely, 165039023 + ... + 165039030.

It is an arithmetic number, because the mean of its divisors is an integer number (385091063).

Almost surely, 2^1320312212 is an apocalyptic number.

It is an amenable number.

1320312212 is a deficient number, since it is larger than the sum of its proper divisors (990234166).

1320312212 is a wasteful number, since it uses less digits than its factorization.

1320312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330078057 (or 330078055 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320312212 is about 36336.1006713709. The cubic root of 1320312212 is about 1097.0477896497.

Adding to 1320312212 its reverse (2122130231), we get a palindrome (3442442443).

The spelling of 1320312212 in words is "one billion, three hundred twenty million, three hundred twelve thousand, two hundred twelve".