313420243 has 4 divisors (see below), whose sum is σ = 315708120. Its totient is φ = 311132368.

The previous prime is 313420231. The next prime is 313420253. The reversal of 313420243 is 342024313.

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: 342024313 = 13763 ⋅24851.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313420243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313420223) 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, 1143733 + ... + 1144006.

It is an arithmetic number, because the mean of its divisors is an integer number (78927030).

Almost surely, 2^313420243 is an apocalyptic number.

313420243 is a deficient number, since it is larger than the sum of its proper divisors (2287877).

313420243 is a wasteful number, since it uses less digits than its factorization.

313420243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287876.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 313420243 is about 17703.6787984871. The cubic root of 313420243 is about 679.2698643810.

Adding to 313420243 its reverse (342024313), we get a palindrome (655444556).

The spelling of 313420243 in words is "three hundred thirteen million, four hundred twenty thousand, two hundred forty-three".