312230221 has 8 divisors (see below), whose sum is σ = 326963520. Its totient is φ = 297593472.

The previous prime is 312230197. The next prime is 312230257. The reversal of 312230221 is 122032213.

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 312230221 - 2¹¹ = 312228173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312230195 and 312230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312230521) 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, 17476 + ... + 30493.

It is an arithmetic number, because the mean of its divisors is an integer number (40870440).

Almost surely, 2^312230221 is an apocalyptic number.

It is an amenable number.

312230221 is a deficient number, since it is larger than the sum of its proper divisors (14733299).

312230221 is a wasteful number, since it uses less digits than its factorization.

312230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48275.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312230221 is about 17670.0373797001. The cubic root of 312230221 is about 678.4090698290.

Adding to 312230221 its reverse (122032213), we get a palindrome (434262434).

The spelling of 312230221 in words is "three hundred twelve million, two hundred thirty thousand, two hundred twenty-one".