1312169 has 2 divisors, whose sum is σ = 1312170. Its totient is φ = 1312168.

The previous prime is 1312153. The next prime is 1312177. The reversal of 1312169 is 9612131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 75625 = 1112^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312169 - 2⁴ = 1312153 is a prime.

It is a super-2 number, since 2×1312169² = 3443574969122, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1312139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656084 + 656085.

It is an arithmetic number, because the mean of its divisors is an integer number (656085).

2^1312169 is an apocalyptic number.

It is an amenable number.

1312169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312169 is an equidigital number, since it uses as much as digits as its factorization.

1312169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 1312169 is about 1145.4994543866. The cubic root of 1312169 is about 109.4787737816.

The spelling of 1312169 in words is "one million, three hundred twelve thousand, one hundred sixty-nine".