1297336213 has 4 divisors (see below), whose sum is σ = 1310181228. Its totient is φ = 1284491200.

The previous prime is 1297336193. The next prime is 1297336219. The reversal of 1297336213 is 3126337921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3126337921 = 7 ⋅446619703.

It can be written as a sum of positive squares in 2 ways, for example, as 1032851044 + 264485169 = 32138^2 + 16263^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297336213 - 2¹⁷ = 1297205141 is a prime.

It is a super-2 number, since 2×1297336213² = 3366162499122362738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297336219) 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 in 3 ways as a sum of consecutive naturals, for example, 6422356 + ... + 6422557.

It is an arithmetic number, because the mean of its divisors is an integer number (327545307).

Almost surely, 2^1297336213 is an apocalyptic number.

It is an amenable number.

1297336213 is a deficient number, since it is larger than the sum of its proper divisors (12845015).

1297336213 is a wasteful number, since it uses less digits than its factorization.

1297336213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845014.

The product of its digits is 40824, while the sum is 37.

The square root of 1297336213 is about 36018.5537327639. The cubic root of 1297336213 is about 1090.6469276391.

The spelling of 1297336213 in words is "one billion, two hundred ninety-seven million, three hundred thirty-six thousand, two hundred thirteen".