1123597391 has 6 divisors (see below), whose sum is σ = 1307041920. Its totient is φ = 963083436.

The previous prime is 1123597381. The next prime is 1123597393. The reversal of 1123597391 is 1937953211.

It is not a de Polignac number, because 1123597391 - 2¹⁰ = 1123596367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123597393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11465231 + ... + 11465328.

It is an arithmetic number, because the mean of its divisors is an integer number (217840320).

Almost surely, 2^1123597391 is an apocalyptic number.

1123597391 is a deficient number, since it is larger than the sum of its proper divisors (183444529).

1123597391 is an equidigital number, since it uses as much as digits as its factorization.

1123597391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930573 (or 22930566 counting only the distinct ones).

The product of its digits is 51030, while the sum is 41.

The square root of 1123597391 is about 33520.1042808640. The cubic root of 1123597391 is about 1039.6095029886.

The spelling of 1123597391 in words is "one billion, one hundred twenty-three million, five hundred ninety-seven thousand, three hundred ninety-one".