1123104091 has 2 divisors, whose sum is σ = 1123104092. Its totient is φ = 1123104090.

The previous prime is 1123104089. The next prime is 1123104107. The reversal of 1123104091 is 1904013211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123104091 - 2¹ = 1123104089 is a prime.

It is a super-4 number, since 4×1123104091⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 1123104089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1123104011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561552045 + 561552046.

It is an arithmetic number, because the mean of its divisors is an integer number (561552046).

Almost surely, 2^1123104091 is an apocalyptic number.

1123104091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123104091 is an equidigital number, since it uses as much as digits as its factorization.

1123104091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1123104091 is about 33512.7452023853. The cubic root of 1123104091 is about 1039.4573386273.

The spelling of 1123104091 in words is "one billion, one hundred twenty-three million, one hundred four thousand, ninety-one".