312444413 has 4 divisors (see below), whose sum is σ = 313081248. Its totient is φ = 311807580.

The previous prime is 312444403. The next prime is 312444437. The reversal of 312444413 is 314444213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314444213 = 4583 ⋅68611.

It is a cyclic number.

It is not a de Polignac number, because 312444413 - 2⁸ = 312444157 is a prime.

It is a super-2 number, since 2×312444413² = 195243022429829138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312444403) 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, 317681 + ... + 318662.

It is an arithmetic number, because the mean of its divisors is an integer number (78270312).

Almost surely, 2^312444413 is an apocalyptic number.

It is an amenable number.

312444413 is a deficient number, since it is larger than the sum of its proper divisors (636835).

312444413 is an equidigital number, since it uses as much as digits as its factorization.

312444413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636834.

The product of its digits is 4608, while the sum is 26.

The square root of 312444413 is about 17676.0972219549. The cubic root of 312444413 is about 678.5641654076.

Adding to 312444413 its reverse (314444213), we get a palindrome (626888626).

The spelling of 312444413 in words is "three hundred twelve million, four hundred forty-four thousand, four hundred thirteen".