1213020310311 has 6 divisors (see below), whose sum is σ = 1752140448240. Its totient is φ = 808680206868.

The previous prime is 1213020310309. The next prime is 1213020310349. The reversal of 1213020310311 is 1130130203121.

1213020310311 is a `hidden beast` number, since 1 + 21 + 3 + 0 + 20 + 310 + 311 = 666.

It is not a de Polignac number, because 1213020310311 - 2¹ = 1213020310309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213020310511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67390017231 + ... + 67390017248.

It is an arithmetic number, because the mean of its divisors is an integer number (292023408040).

Almost surely, 2^{1213020310311} is an apocalyptic number.

1213020310311 is a deficient number, since it is larger than the sum of its proper divisors (539120137929).

1213020310311 is a wasteful number, since it uses less digits than its factorization.

1213020310311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134780034485 (or 134780034482 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1213020310311 its reverse (1130130203121), we get a palindrome (2343150513432).

The spelling of 1213020310311 in words is "one trillion, two hundred thirteen billion, twenty million, three hundred ten thousand, three hundred eleven".