313221120201331 has 4 divisors (see below), whose sum is σ = 313221155632000. Its totient is φ = 313221084770664.

The previous prime is 313221120201257. The next prime is 313221120201347. The reversal of 313221120201331 is 133102021122313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 313221120201331 - 2¹⁵ = 313221120168563 is a prime.

It is a super-2 number, since 2×313221120201331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313221120201296 and 313221120201305.

It is not an unprimeable number, because it can be changed into a prime (313221120201391) 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, 7684270 + ... + 26181868.

It is an arithmetic number, because the mean of its divisors is an integer number (78305288908000).

Almost surely, 2^{313221120201331} is an apocalyptic number.

313221120201331 is a deficient number, since it is larger than the sum of its proper divisors (35430669).

313221120201331 is a wasteful number, since it uses less digits than its factorization.

313221120201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35430668.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 313221120201331 its reverse (133102021122313), we get a palindrome (446323141323644).

The spelling of 313221120201331 in words is "three hundred thirteen trillion, two hundred twenty-one billion, one hundred twenty million, two hundred one thousand, three hundred thirty-one".