1215134383 has 2 divisors, whose sum is σ = 1215134384. Its totient is φ = 1215134382.

The previous prime is 1215134357. The next prime is 1215134419. The reversal of 1215134383 is 3834315121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1215134383 - 2⁵ = 1215134351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215131383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607567191 + 607567192.

It is an arithmetic number, because the mean of its divisors is an integer number (607567192).

Almost surely, 2^1215134383 is an apocalyptic number.

1215134383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215134383 is an equidigital number, since it uses as much as digits as its factorization.

1215134383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 1215134383 is about 34858.7777037578. Note that the first 4 decimals coincide. The cubic root of 1215134383 is about 1067.1073303077.

The spelling of 1215134383 in words is "one billion, two hundred fifteen million, one hundred thirty-four thousand, three hundred eighty-three".