312213433 has 24 divisors (see below), whose sum is σ = 371664704. Its totient is φ = 256845600.

The previous prime is 312213403. The next prime is 312213457. The reversal of 312213433 is 334312213.

It is not a de Polignac number, because 312213433 - 2¹⁷ = 312082361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312213403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 943078 + ... + 943408.

Almost surely, 2^312213433 is an apocalyptic number.

It is an amenable number.

312213433 is a deficient number, since it is larger than the sum of its proper divisors (59451271).

312213433 is an equidigital number, since it uses as much as digits as its factorization.

312213433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 446 counting only the distinct ones).

The product of its digits is 1296, while the sum is 22.

The square root of 312213433 is about 17669.5623318746. The cubic root of 312213433 is about 678.3969107075.

Adding to 312213433 its reverse (334312213), we get a palindrome (646525646).

The spelling of 312213433 in words is "three hundred twelve million, two hundred thirteen thousand, four hundred thirty-three".