313220221001 has 4 divisors (see below), whose sum is σ = 313393177104. Its totient is φ = 313047264900.

The previous prime is 313220220979. The next prime is 313220221021. The reversal of 313220221001 is 100122022313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313220221001 - 2²⁶ = 313153112137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (313220221021) 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, 86475335 + ... + 86478956.

It is an arithmetic number, because the mean of its divisors is an integer number (78348294276).

Almost surely, 2^313220221001 is an apocalyptic number.

It is an amenable number.

313220221001 is a deficient number, since it is larger than the sum of its proper divisors (172956103).

313220221001 is a wasteful number, since it uses less digits than its factorization.

313220221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172956102.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 313220221001 its reverse (100122022313), we get a palindrome (413342243314).

The spelling of 313220221001 in words is "three hundred thirteen billion, two hundred twenty million, two hundred twenty-one thousand, one".