312223433 has 4 divisors (see below), whose sum is σ = 312293268. Its totient is φ = 312153600.

The previous prime is 312223399. The next prime is 312223493. The reversal of 312223433 is 334322213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334322213 = 571 ⋅585503.

It can be written as a sum of positive squares in 2 ways, for example, as 245768329 + 66455104 = 15677^2 + 8152^2 .

It is a cyclic number.

It is not a de Polignac number, because 312223433 - 2²² = 308029129 is a prime.

It is a super-2 number, since 2×312223433² = 194966944228610978, 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 = 312223399 and 312223408.

It is not an unprimeable number, because it can be changed into a prime (312223493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27716 + ... + 37317.

It is an arithmetic number, because the mean of its divisors is an integer number (78073317).

Almost surely, 2^312223433 is an apocalyptic number.

It is an amenable number.

312223433 is a deficient number, since it is larger than the sum of its proper divisors (69835).

312223433 is an equidigital number, since it uses as much as digits as its factorization.

312223433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69834.

The product of its digits is 2592, while the sum is 23.

The square root of 312223433 is about 17669.8453020959. The cubic root of 312223433 is about 678.4041535057.

Adding to 312223433 its reverse (334322213), we get a palindrome (646545646).

The spelling of 312223433 in words is "three hundred twelve million, two hundred twenty-three thousand, four hundred thirty-three".