1213310240312 has 32 divisors (see below), whose sum is σ = 2424375705600. Its totient is φ = 567932448864.

The previous prime is 1213310240291. The next prime is 1213310240327. The reversal of 1213310240312 is 2130420133121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70141112 + ... + 70158407.

It is an arithmetic number, because the mean of its divisors is an integer number (75761740800).

Almost surely, 2^{1213310240312} is an apocalyptic number.

It is an amenable number.

1213310240312 is a deficient number, since it is larger than the sum of its proper divisors (1211065465288).

1213310240312 is a wasteful number, since it uses less digits than its factorization.

1213310240312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140299595 (or 140299591 counting only the distinct ones).

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

Adding to 1213310240312 its reverse (2130420133121), we get a palindrome (3343730373433).

The spelling of 1213310240312 in words is "one trillion, two hundred thirteen billion, three hundred ten million, two hundred forty thousand, three hundred twelve".