313002330311221 has 4 divisors (see below), whose sum is σ = 331414232094252. Its totient is φ = 294590428528192.

The previous prime is 313002330311213. The next prime is 313002330311267. The reversal of 313002330311221 is 122113033200313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 110594374500996 + 202407955810225 = 10516386^2 + 14227015^2 .

It is a cyclic number.

It is not a de Polignac number, because 313002330311221 - 2³ = 313002330311213 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 (313002330311201) 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, 9205950891490 + ... + 9205950891523.

It is an arithmetic number, because the mean of its divisors is an integer number (82853558023563).

Almost surely, 2^{313002330311221} is an apocalyptic number.

It is an amenable number.

313002330311221 is a deficient number, since it is larger than the sum of its proper divisors (18411901783031).

313002330311221 is a wasteful number, since it uses less digits than its factorization.

313002330311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18411901783030.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 313002330311221 its reverse (122113033200313), we get a palindrome (435115363511534).

The spelling of 313002330311221 in words is "three hundred thirteen trillion, two billion, three hundred thirty million, three hundred eleven thousand, two hundred twenty-one".