312223233 has 16 divisors (see below), whose sum is σ = 476061696. Its totient is φ = 178303440.

The previous prime is 312223211. The next prime is 312223237. The reversal of 312223233 is 332322213.

It is not a de Polignac number, because 312223233 - 2⁵ = 312223201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (312223237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40810 + ... + 47852.

It is an arithmetic number, because the mean of its divisors is an integer number (29753856).

Almost surely, 2^312223233 is an apocalyptic number.

It is an amenable number.

312223233 is a deficient number, since it is larger than the sum of its proper divisors (163838463).

312223233 is a wasteful number, since it uses less digits than its factorization.

312223233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164.

The product of its digits is 1296, while the sum is 21.

The square root of 312223233 is about 17669.8396427359. The cubic root of 312223233 is about 678.4040086512.

Adding to 312223233 its reverse (332322213), we get a palindrome (644545446).

The spelling of 312223233 in words is "three hundred twelve million, two hundred twenty-three thousand, two hundred thirty-three".