1213031213313 has 16 divisors (see below), whose sum is σ = 1633203551616. Its totient is φ = 800774386560.

The previous prime is 1213031213291. The next prime is 1213031213347. The reversal of 1213031213313 is 3133121303121.

It is not a de Polignac number, because 1213031213313 - 2²⁰ = 1213030164737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213031213353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4050723 + ... + 4339863.

It is an arithmetic number, because the mean of its divisors is an integer number (102075221976).

Almost surely, 2^{1213031213313} is an apocalyptic number.

It is an amenable number.

1213031213313 is a deficient number, since it is larger than the sum of its proper divisors (420172338303).

1213031213313 is a wasteful number, since it uses less digits than its factorization.

1213031213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302824.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1213031213313 its reverse (3133121303121), we get a palindrome (4346152516434).

The spelling of 1213031213313 in words is "one trillion, two hundred thirteen billion, thirty-one million, two hundred thirteen thousand, three hundred thirteen".