1311303132021 has 8 divisors (see below), whose sum is σ = 1758873662784. Its totient is φ = 868967344640.

The previous prime is 1311303132011. The next prime is 1311303132031. The reversal of 1311303132021 is 1202313031131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1311303132011) and next prime (1311303132031).

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 1311303132021 - 2⁷ = 1311303131893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311303132011) 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, 1308685260 + ... + 1308686261.

It is an arithmetic number, because the mean of its divisors is an integer number (219859207848).

Almost surely, 2^{1311303132021} is an apocalyptic number.

It is an amenable number.

1311303132021 is a deficient number, since it is larger than the sum of its proper divisors (447570530763).

1311303132021 is a wasteful number, since it uses less digits than its factorization.

1311303132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617371691.

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

Adding to 1311303132021 its reverse (1202313031131), we get a palindrome (2513616163152).

The spelling of 1311303132021 in words is "one trillion, three hundred eleven billion, three hundred three million, one hundred thirty-two thousand, twenty-one".