1213103210312 has 32 divisors (see below), whose sum is σ = 2599555921920. Its totient is φ = 519891567360.

The previous prime is 1213103210303. The next prime is 1213103210323. The reversal of 1213103210312 is 2130123013121.

It is a happy 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, 3332048 + ... + 3678144.

It is an arithmetic number, because the mean of its divisors is an integer number (81236122560).

Almost surely, 2^{1213103210312} is an apocalyptic number.

It is an amenable number.

1213103210312 is an abundant number, since it is smaller than the sum of its proper divisors (1386452711608).

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

1213103210312 is a wasteful number, since it uses less digits than its factorization.

1213103210312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408701 (or 408697 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1213103210312 its reverse (2130123013121), we get a palindrome (3343226223433).

The spelling of 1213103210312 in words is "one trillion, two hundred thirteen billion, one hundred three million, two hundred ten thousand, three hundred twelve".