1321410269 has 2 divisors, whose sum is σ = 1321410270. Its totient is φ = 1321410268.

The previous prime is 1321410241. The next prime is 1321410313. The reversal of 1321410269 is 9620141231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1271778244 + 49632025 = 35662^2 + 7045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321410269 is a prime.

It is a super-2 number, since 2×1321410269² = 3492250198037304722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321410239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660705134 + 660705135.

It is an arithmetic number, because the mean of its divisors is an integer number (660705135).

Almost surely, 2^1321410269 is an apocalyptic number.

It is an amenable number.

1321410269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321410269 is an equidigital number, since it uses as much as digits as its factorization.

1321410269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1321410269 is about 36351.2072564310. The cubic root of 1321410269 is about 1097.3518306690.

The spelling of 1321410269 in words is "one billion, three hundred twenty-one million, four hundred ten thousand, two hundred sixty-nine".