313144081 has 2 divisors, whose sum is σ = 313144082. Its totient is φ = 313144080.

The previous prime is 313144021. The next prime is 313144099. The reversal of 313144081 is 180441313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268468225 + 44675856 = 16385^2 + 6684^2 .

It is a cyclic number.

It is not a de Polignac number, because 313144081 - 2⁹ = 313143569 is a prime.

It is a super-2 number, since 2×313144081² = 196118430930669122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313144021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156572040 + 156572041.

It is an arithmetic number, because the mean of its divisors is an integer number (156572041).

Almost surely, 2^313144081 is an apocalyptic number.

It is an amenable number.

313144081 is a deficient number, since it is larger than the sum of its proper divisors (1).

313144081 is an equidigital number, since it uses as much as digits as its factorization.

313144081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 313144081 is about 17695.8775142687. The cubic root of 313144081 is about 679.0702988331.

Adding to 313144081 its reverse (180441313), we get a palindrome (493585394).

The spelling of 313144081 in words is "three hundred thirteen million, one hundred forty-four thousand, eighty-one".