312449 has 4 divisors (see below), whose sum is σ = 322560. Its totient is φ = 302340.

The previous prime is 312427. The next prime is 312451. The reversal of 312449 is 944213.

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: 944213 = 149 ⋅6337.

It is a cyclic number.

It is not a de Polignac number, because 312449 - 2¹⁶ = 246913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312469) 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, 5009 + ... + 5070.

It is an arithmetic number, because the mean of its divisors is an integer number (80640).

2³¹²⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

312449 is a deficient number, since it is larger than the sum of its proper divisors (10111).

312449 is a wasteful number, since it uses less digits than its factorization.

312449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110.

The product of its digits is 864, while the sum is 23.

The square root of 312449 is about 558.9713767269. The cubic root of 312449 is about 67.8567486061.

Adding to 312449 its product of digits (864), we get a palindrome (313313).

The spelling of 312449 in words is "three hundred twelve thousand, four hundred forty-nine".