313233221 has 8 divisors (see below), whose sum is σ = 376822080. Its totient is φ = 254354688.

The previous prime is 313233203. The next prime is 313233223. The reversal of 313233221 is 122332313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313233221 - 2¹⁰ = 313232197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313233193 and 313233202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313233223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177436 + ... + 1177701.

It is an arithmetic number, because the mean of its divisors is an integer number (47102760).

Almost surely, 2^313233221 is an apocalyptic number.

It is an amenable number.

313233221 is a deficient number, since it is larger than the sum of its proper divisors (63588859).

313233221 is a wasteful number, since it uses less digits than its factorization.

313233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355163.

The product of its digits is 648, while the sum is 20.

The square root of 313233221 is about 17698.3960007680. The cubic root of 313233221 is about 679.1347277305.

Adding to 313233221 its reverse (122332313), we get a palindrome (435565534).

The spelling of 313233221 in words is "three hundred thirteen million, two hundred thirty-three thousand, two hundred twenty-one".