313001243 has 4 divisors (see below), whose sum is σ = 313629000. Its totient is φ = 312373488.

The previous prime is 313001237. The next prime is 313001261. The reversal of 313001243 is 342100313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342100313 = 16661 ⋅20533.

It is a cyclic number.

It is not a de Polignac number, because 313001243 - 2⁶ = 313001179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (310001243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313130 + ... + 314127.

It is an arithmetic number, because the mean of its divisors is an integer number (78407250).

Almost surely, 2^313001243 is an apocalyptic number.

313001243 is a deficient number, since it is larger than the sum of its proper divisors (627757).

313001243 is an equidigital number, since it uses as much as digits as its factorization.

313001243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627756.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313001243 is about 17691.8411421762. The cubic root of 313001243 is about 678.9670324231.

Adding to 313001243 its reverse (342100313), we get a palindrome (655101556).

The spelling of 313001243 in words is "three hundred thirteen million, one thousand, two hundred forty-three".