1123131959 has 2 divisors, whose sum is σ = 1123131960. Its totient is φ = 1123131958.

The previous prime is 1123131949. The next prime is 1123132001. The reversal of 1123131959 is 9591313211.

It is a weak prime.

It is an emirp because it is prime and its reverse (9591313211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123131959 - 2²⁰ = 1122083383 is a prime.

It is a super-2 number, since 2×1123131959² = 2522850794654355362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123131949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561565979 + 561565980.

It is an arithmetic number, because the mean of its divisors is an integer number (561565980).

Almost surely, 2^1123131959 is an apocalyptic number.

1123131959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123131959 is an equidigital number, since it uses as much as digits as its factorization.

1123131959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 35.

The square root of 1123131959 is about 33513.1609819187. The cubic root of 1123131959 is about 1039.4659360369.

The spelling of 1123131959 in words is "one billion, one hundred twenty-three million, one hundred thirty-one thousand, nine hundred fifty-nine".