1125343291 has 2 divisors, whose sum is σ = 1125343292. Its totient is φ = 1125343290.

The previous prime is 1125343283. The next prime is 1125343319. The reversal of 1125343291 is 1923435211.

It is a weak prime.

It is an emirp because it is prime and its reverse (1923435211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1125343291 - 2³ = 1125343283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125343201) 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, 562671645 + 562671646.

It is an arithmetic number, because the mean of its divisors is an integer number (562671646).

Almost surely, 2^1125343291 is an apocalyptic number.

1125343291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125343291 is an equidigital number, since it uses as much as digits as its factorization.

1125343291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 1125343291 is about 33546.1367522402. The cubic root of 1125343291 is about 1040.1476895164.

The spelling of 1125343291 in words is "one billion, one hundred twenty-five million, three hundred forty-three thousand, two hundred ninety-one".