1311201023213 has 8 divisors (see below), whose sum is σ = 1312529504256. Its totient is φ = 1309872718800.

The previous prime is 1311201023203. The next prime is 1311201023267. The reversal of 1311201023213 is 3123201021131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311201023213 - 2⁶ = 1311201023149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311201023203) 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, 18841520 + ... + 18910982.

It is an arithmetic number, because the mean of its divisors is an integer number (164066188032).

Almost surely, 2^{1311201023213} is an apocalyptic number.

It is an amenable number.

1311201023213 is a deficient number, since it is larger than the sum of its proper divisors (1328481043).

1311201023213 is a wasteful number, since it uses less digits than its factorization.

1311201023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88315.

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

Adding to 1311201023213 its reverse (3123201021131), we get a palindrome (4434402044344).

The spelling of 1311201023213 in words is "one trillion, three hundred eleven billion, two hundred one million, twenty-three thousand, two hundred thirteen".