1310681 has 2 divisors, whose sum is σ = 1310682. Its totient is φ = 1310680.

The previous prime is 1310669. The next prime is 1310693. The reversal of 1310681 is 1860131.

It is a balanced prime because it is at equal distance from previous prime (1310669) and next prime (1310693).

It can be written as a sum of positive squares in only one way, i.e., 931225 + 379456 = 965^2 + 616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310681 is a prime.

It is a super-2 number, since 2×1310681² = 3435769367522, which contains 22 as substring.

It is equal to p₁₀₀₇₈₄ and since 1310681 and 100784 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1310611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655340 + 655341.

It is an arithmetic number, because the mean of its divisors is an integer number (655341).

2^1310681 is an apocalyptic number.

It is an amenable number.

1310681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310681 is an equidigital number, since it uses as much as digits as its factorization.

1310681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1310681 is about 1144.8497718041. The cubic root of 1310681 is about 109.4373751426.

It can be divided in two parts, 1310 and 681, that added together give a palindrome (1991).

The spelling of 1310681 in words is "one million, three hundred ten thousand, six hundred eighty-one".