313111061 has 2 divisors, whose sum is σ = 313111062. Its totient is φ = 313111060.

The previous prime is 313111037. The next prime is 313111087. The reversal of 313111061 is 160111313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268140625 + 44970436 = 16375^2 + 6706^2 .

It is a cyclic number.

It is not a de Polignac number, because 313111061 - 2¹⁰ = 313110037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313111021) 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 as a sum of consecutive naturals, namely, 156555530 + 156555531.

It is an arithmetic number, because the mean of its divisors is an integer number (156555531).

Almost surely, 2^313111061 is an apocalyptic number.

It is an amenable number.

313111061 is a deficient number, since it is larger than the sum of its proper divisors (1).

313111061 is an equidigital number, since it uses as much as digits as its factorization.

313111061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 313111061 is about 17694.9445040102. The cubic root of 313111061 is about 679.0464294273.

Adding to 313111061 its reverse (160111313), we get a palindrome (473222374).

The spelling of 313111061 in words is "three hundred thirteen million, one hundred eleven thousand, sixty-one".