313221132311 has 4 divisors (see below), whose sum is σ = 313363056192. Its totient is φ = 313079208432.

The previous prime is 313221132281. The next prime is 313221132319. The reversal of 313221132311 is 113231122313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313221132311 - 2¹⁰ = 313221131287 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 (313221132319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70958630 + ... + 70963043.

It is an arithmetic number, because the mean of its divisors is an integer number (78340764048).

Almost surely, 2^313221132311 is an apocalyptic number.

313221132311 is a deficient number, since it is larger than the sum of its proper divisors (141923881).

313221132311 is a wasteful number, since it uses less digits than its factorization.

313221132311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141923880.

The product of its digits is 648, while the sum is 23.

Adding to 313221132311 its reverse (113231122313), we get a palindrome (426452254624).

The spelling of 313221132311 in words is "three hundred thirteen billion, two hundred twenty-one million, one hundred thirty-two thousand, three hundred eleven".