312221013223 has 8 divisors (see below), whose sum is σ = 357834850848. Its totient is φ = 266859884544.

The previous prime is 312221013211. The next prime is 312221013263. The reversal of 312221013223 is 322310122213.

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

It is a cyclic number.

It is not a de Polignac number, because 312221013223 - 2⁵ = 312221013191 is a prime.

It is a super-2 number, since 2×312221013223² (a number of 24 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 = 312221013194 and 312221013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312221013263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63174586 + ... + 63179527.

It is an arithmetic number, because the mean of its divisors is an integer number (44729356356).

Almost surely, 2^312221013223 is an apocalyptic number.

312221013223 is a deficient number, since it is larger than the sum of its proper divisors (45613837625).

312221013223 is a wasteful number, since it uses less digits than its factorization.

312221013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126354473.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312221013223 its reverse (322310122213), we get a palindrome (634531135436).

The spelling of 312221013223 in words is "three hundred twelve billion, two hundred twenty-one million, thirteen thousand, two hundred twenty-three".