1123311979 has 2 divisors, whose sum is σ = 1123311980. Its totient is φ = 1123311978.

The previous prime is 1123311967. The next prime is 1123311983. The reversal of 1123311979 is 9791133211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123311979 - 2⁵ = 1123311947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123311929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561655989 + 561655990.

It is an arithmetic number, because the mean of its divisors is an integer number (561655990).

Almost surely, 2^1123311979 is an apocalyptic number.

1123311979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123311979 is an equidigital number, since it uses as much as digits as its factorization.

1123311979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 37.

The square root of 1123311979 is about 33515.8466848146. The cubic root of 1123311979 is about 1039.5214696304.

The spelling of 1123311979 in words is "one billion, one hundred twenty-three million, three hundred eleven thousand, nine hundred seventy-nine".