313122461 has 2 divisors, whose sum is σ = 313122462. Its totient is φ = 313122460.

The previous prime is 313122449. The next prime is 313122487. The reversal of 313122461 is 164221313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162078361 + 151044100 = 12731^2 + 12290^2 .

It is a cyclic number.

It is not a de Polignac number, because 313122461 - 2¹⁴ = 313106077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313122401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156561230 + 156561231.

It is an arithmetic number, because the mean of its divisors is an integer number (156561231).

Almost surely, 2^313122461 is an apocalyptic number.

It is an amenable number.

313122461 is a deficient number, since it is larger than the sum of its proper divisors (1).

313122461 is an equidigital number, since it uses as much as digits as its factorization.

313122461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 313122461 is about 17695.2666269825. The cubic root of 313122461 is about 679.0546704173.

Adding to 313122461 its reverse (164221313), we get a palindrome (477343774).

The spelling of 313122461 in words is "three hundred thirteen million, one hundred twenty-two thousand, four hundred sixty-one".