1313161 has 2 divisors, whose sum is σ = 1313162. Its totient is φ = 1313160.

The previous prime is 1313153. The next prime is 1313171. The reversal of 1313161 is 1613131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 198025 = 1056^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313161 - 2³ = 1313153 is a prime.

1313161 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1313141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656580 + 656581.

It is an arithmetic number, because the mean of its divisors is an integer number (656581).

2^1313161 is an apocalyptic number.

It is an amenable number.

1313161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313161 is an equidigital number, since it uses as much as digits as its factorization.

1313161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 16.

The square root of 1313161 is about 1145.9323714775. The cubic root of 1313161 is about 109.5063554897.

Adding to 1313161 its reverse (1613131), we get a palindrome (2926292).

The spelling of 1313161 in words is "one million, three hundred thirteen thousand, one hundred sixty-one".