1123316551 has 8 divisors (see below), whose sum is σ = 1297026080. Its totient is φ = 952915968.

The previous prime is 1123316543. The next prime is 1123316569. The reversal of 1123316551 is 1556133211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123316551 - 2³ = 1123316543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123316351) 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, 826506 + ... + 827863.

It is an arithmetic number, because the mean of its divisors is an integer number (162128260).

Almost surely, 2^1123316551 is an apocalyptic number.

1123316551 is a deficient number, since it is larger than the sum of its proper divisors (173709529).

1123316551 is an equidigital number, since it uses as much as digits as its factorization.

1123316551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654473.

The product of its digits is 2700, while the sum is 28.

The square root of 1123316551 is about 33515.9148912871. The cubic root of 1123316551 is about 1039.5228799497.

Adding to 1123316551 its reverse (1556133211), we get a palindrome (2679449762).

The spelling of 1123316551 in words is "one billion, one hundred twenty-three million, three hundred sixteen thousand, five hundred fifty-one".