1311230033021 has 8 divisors (see below), whose sum is σ = 1388432044800. Its totient is φ = 1234035891648.

The previous prime is 1311230032999. The next prime is 1311230033063. The reversal of 1311230033021 is 1203300321131.

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 1311230033021 - 2¹⁰ = 1311230031997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311230032984 and 1311230033002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311230033921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622861 + ... + 2292626.

It is an arithmetic number, because the mean of its divisors is an integer number (173554005600).

Almost surely, 2^{1311230033021} is an apocalyptic number.

It is an amenable number.

1311230033021 is a deficient number, since it is larger than the sum of its proper divisors (77202011779).

1311230033021 is a wasteful number, since it uses less digits than its factorization.

1311230033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935203.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1311230033021 its reverse (1203300321131), we get a palindrome (2514530354152).

The spelling of 1311230033021 in words is "one trillion, three hundred eleven billion, two hundred thirty million, thirty-three thousand, twenty-one".