1311233021301 has 64 divisors (see below), whose sum is σ = 2182218854400. Its totient is φ = 683327425536.

The previous prime is 1311233021297. The next prime is 1311233021309. The reversal of 1311233021301 is 1031203321131.

It is a happy number.

It is not a de Polignac number, because 1311233021301 - 2² = 1311233021297 is a prime.

It is a super-4 number, since 4×1311233021301⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311233021309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3731296 + ... + 4067558.

It is an arithmetic number, because the mean of its divisors is an integer number (34097169600).

Almost surely, 2^{1311233021301} is an apocalyptic number.

It is an amenable number.

1311233021301 is a deficient number, since it is larger than the sum of its proper divisors (870985833099).

1311233021301 is a wasteful number, since it uses less digits than its factorization.

1311233021301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336658.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1311233021301 its reverse (1031203321131), we get a palindrome (2342436342432).

The spelling of 1311233021301 in words is "one trillion, three hundred eleven billion, two hundred thirty-three million, twenty-one thousand, three hundred one".