313135843 has 4 divisors (see below), whose sum is σ = 316908648. Its totient is φ = 309363040.

The previous prime is 313135817. The next prime is 313135859. The reversal of 313135843 is 348531313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348531313 = 13 ⋅26810101.

It is a cyclic number.

It is not a de Polignac number, because 313135843 - 2⁵ = 313135811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313135813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886278 + ... + 1886443.

It is an arithmetic number, because the mean of its divisors is an integer number (79227162).

Almost surely, 2^313135843 is an apocalyptic number.

313135843 is a deficient number, since it is larger than the sum of its proper divisors (3772805).

313135843 is an equidigital number, since it uses as much as digits as its factorization.

313135843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772804.

The product of its digits is 12960, while the sum is 31.

The square root of 313135843 is about 17695.6447466601. The cubic root of 313135843 is about 679.0643439277.

The spelling of 313135843 in words is "three hundred thirteen million, one hundred thirty-five thousand, eight hundred forty-three".