313202423001221 has 64 divisors (see below), whose sum is σ = 356043911731200. Its totient is φ = 273340757606400.

The previous prime is 313202423001203. The next prime is 313202423001227. The reversal of 313202423001221 is 122100324202313.

It is a cyclic number.

It is not a de Polignac number, because 313202423001221 - 2¹⁸ = 313202422739077 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 (313202423001227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53935320500 + ... + 53935326306.

It is an arithmetic number, because the mean of its divisors is an integer number (5563186120800).

Almost surely, 2^{313202423001221} is an apocalyptic number.

It is an amenable number.

313202423001221 is a deficient number, since it is larger than the sum of its proper divisors (42841488729979).

313202423001221 is a wasteful number, since it uses less digits than its factorization.

313202423001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 313202423001221 its reverse (122100324202313), we get a palindrome (435302747203534).

The spelling of 313202423001221 in words is "three hundred thirteen trillion, two hundred two billion, four hundred twenty-three million, one thousand, two hundred twenty-one".