1213312002312 has 32 divisors (see below), whose sum is σ = 3033734558400. Its totient is φ = 404376727104.

The previous prime is 1213312002247. The next prime is 1213312002313. The reversal of 1213312002312 is 2132002133121.

It is not an unprimeable number, because it can be changed into a prime (1213312002313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3624303 + ... + 3944894.

It is an arithmetic number, because the mean of its divisors is an integer number (94804204950).

Almost surely, 2^{1213312002312} is an apocalyptic number.

1213312002312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213312002312 is an abundant number, since it is smaller than the sum of its proper divisors (1820422556088).

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

1213312002312 is a wasteful number, since it uses less digits than its factorization.

1213312002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7575885 (or 7575881 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213312002312 its reverse (2132002133121), we get a palindrome (3345314135433).

The spelling of 1213312002312 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, two thousand, three hundred twelve".