1123470391 has 4 divisors (see below), whose sum is σ = 1123967800. Its totient is φ = 1122972984.

The previous prime is 1123470329. The next prime is 1123470401. The reversal of 1123470391 is 1930743211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1930743211 = 23 ⋅83945357.

It is a cyclic number.

It is not a de Polignac number, because 1123470391 - 2¹⁹ = 1122946103 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 (1123470311) 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 3 ways as a sum of consecutive naturals, for example, 245301 + ... + 249838.

It is an arithmetic number, because the mean of its divisors is an integer number (280991950).

Almost surely, 2^1123470391 is an apocalyptic number.

1123470391 is a deficient number, since it is larger than the sum of its proper divisors (497409).

1123470391 is an equidigital number, since it uses as much as digits as its factorization.

1123470391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497408.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1123470391 is about 33518.2098418158. The cubic root of 1123470391 is about 1039.5703325577.

The spelling of 1123470391 in words is "one billion, one hundred twenty-three million, four hundred seventy thousand, three hundred ninety-one".