313238543 has 2 divisors, whose sum is σ = 313238544. Its totient is φ = 313238542.

The previous prime is 313238521. The next prime is 313238551. The reversal of 313238543 is 345832313.

It is a strong prime.

It is an emirp because it is prime and its reverse (345832313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313238543 - 2²⁴ = 296461327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313228543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156619271 + 156619272.

It is an arithmetic number, because the mean of its divisors is an integer number (156619272).

Almost surely, 2^313238543 is an apocalyptic number.

313238543 is a deficient number, since it is larger than the sum of its proper divisors (1).

313238543 is an equidigital number, since it uses as much as digits as its factorization.

313238543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 313238543 is about 17698.5463527376. The cubic root of 313238543 is about 679.1385739962.

The spelling of 313238543 in words is "three hundred thirteen million, two hundred thirty-eight thousand, five hundred forty-three".