312003223 has 4 divisors (see below), whose sum is σ = 356575120. Its totient is φ = 267431328.

The previous prime is 312003187. The next prime is 312003229. The reversal of 312003223 is 322300213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312003223 is a prime.

It is a super-2 number, since 2×312003223² = 194692022324775458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312003197 and 312003206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312003229) 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, 22285938 + ... + 22285951.

It is an arithmetic number, because the mean of its divisors is an integer number (89143780).

Almost surely, 2^312003223 is an apocalyptic number.

312003223 is a deficient number, since it is larger than the sum of its proper divisors (44571897).

312003223 is an equidigital number, since it uses as much as digits as its factorization.

312003223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44571896.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 312003223 is about 17663.6129656421. The cubic root of 312003223 is about 678.2446240381.

Adding to 312003223 its reverse (322300213), we get a palindrome (634303436).

The spelling of 312003223 in words is "three hundred twelve million, three thousand, two hundred twenty-three".