1123274321 has 8 divisors (see below), whose sum is σ = 1220779560. Its totient is φ = 1027354752.

The previous prime is 1123274309. The next prime is 1123274323. The reversal of 1123274321 is 1234723211.

It can be written as a sum of positive squares in 4 ways, for example, as 116100625 + 1007173696 = 10775^2 + 31736^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123274321 is a prime.

It is a super-2 number, since 2×1123274321² = 2523490400436022082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123274323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394940 + ... + 397773.

It is an arithmetic number, because the mean of its divisors is an integer number (152597445).

Almost surely, 2^1123274321 is an apocalyptic number.

It is an amenable number.

1123274321 is a deficient number, since it is larger than the sum of its proper divisors (97505239).

1123274321 is a wasteful number, since it uses less digits than its factorization.

1123274321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792835.

The product of its digits is 2016, while the sum is 26.

The square root of 1123274321 is about 33515.2848861531. The cubic root of 1123274321 is about 1039.5098531671.

Adding to 1123274321 its reverse (1234723211), we get a palindrome (2357997532).

The spelling of 1123274321 in words is "one billion, one hundred twenty-three million, two hundred seventy-four thousand, three hundred twenty-one".