1213310269 has 2 divisors, whose sum is σ = 1213310270. Its totient is φ = 1213310268.

The previous prime is 1213310251. The next prime is 1213310321. The reversal of 1213310269 is 9620133121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 945562500 + 267747769 = 30750^2 + 16363^2 .

It is an emirp because it is prime and its reverse (9620133121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213310269 - 2⁷ = 1213310141 is a prime.

It is a super-2 number, since 2×1213310269² = 2944243617721704722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213310369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606655134 + 606655135.

It is an arithmetic number, because the mean of its divisors is an integer number (606655135).

Almost surely, 2^1213310269 is an apocalyptic number.

It is an amenable number.

1213310269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213310269 is an equidigital number, since it uses as much as digits as its factorization.

1213310269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1213310269 is about 34832.6035346197. The cubic root of 1213310269 is about 1066.5730957742.

The spelling of 1213310269 in words is "one billion, two hundred thirteen million, three hundred ten thousand, two hundred sixty-nine".