1212131231313 has 16 divisors (see below), whose sum is σ = 1660887231360. Its totient is φ = 785758513536.

The previous prime is 1212131231303. The next prime is 1212131231321. The reversal of 1212131231313 is 3131321312121.

It is not a de Polignac number, because 1212131231313 - 2⁶ = 1212131231249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212131231303) 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, 3214845 + ... + 3572042.

It is an arithmetic number, because the mean of its divisors is an integer number (103805451960).

Almost surely, 2^{1212131231313} is an apocalyptic number.

It is an amenable number.

1212131231313 is a deficient number, since it is larger than the sum of its proper divisors (448756000047).

1212131231313 is a wasteful number, since it uses less digits than its factorization.

1212131231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6788536.

The product of its digits is 648, while the sum is 24.

Adding to 1212131231313 its reverse (3131321312121), we get a palindrome (4343452543434).

The spelling of 1212131231313 in words is "one trillion, two hundred twelve billion, one hundred thirty-one million, two hundred thirty-one thousand, three hundred thirteen".