1213300312 has 16 divisors (see below), whose sum is σ = 2599929360. Its totient is φ = 519985824.

The previous prime is 1213300307. The next prime is 1213300349. The reversal of 1213300312 is 2130033121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10832983 + ... + 10833094.

It is an arithmetic number, because the mean of its divisors is an integer number (162495585).

Almost surely, 2^1213300312 is an apocalyptic number.

It is an amenable number.

1213300312 is an abundant number, since it is smaller than the sum of its proper divisors (1386629048).

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

1213300312 is a wasteful number, since it uses less digits than its factorization.

1213300312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666090 (or 21666086 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213300312 is about 34832.4606078870. The cubic root of 1213300312 is about 1066.5701781645.

Adding to 1213300312 its reverse (2130033121), we get a palindrome (3343333433).

The spelling of 1213300312 in words is "one billion, two hundred thirteen million, three hundred thousand, three hundred twelve".