1296331 has 2 divisors, whose sum is σ = 1296332. Its totient is φ = 1296330.

The previous prime is 1296319. The next prime is 1296341. The reversal of 1296331 is 1336921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296331 is a prime.

It is a super-2 number, since 2×1296331² = 3360948123122, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1296296 and 1296305.

It is not a weakly prime, because it can be changed into another prime (1296341) 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, 648165 + 648166.

It is an arithmetic number, because the mean of its divisors is an integer number (648166).

2^1296331 is an apocalyptic number.

1296331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296331 is an equidigital number, since it uses as much as digits as its factorization.

1296331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 1296331 is about 1138.5653253108. The cubic root of 1296331 is about 109.0365166767.

The spelling of 1296331 in words is "one million, two hundred ninety-six thousand, three hundred thirty-one".