1123143253 has 2 divisors, whose sum is σ = 1123143254. Its totient is φ = 1123143252.

The previous prime is 1123143173. The next prime is 1123143269. The reversal of 1123143253 is 3523413211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984892689 + 138250564 = 31383^2 + 11758^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123143253 - 2¹³ = 1123135061 is a prime.

It is a super-2 number, since 2×1123143253² = 2522901533518844018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123143353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561571626 + 561571627.

It is an arithmetic number, because the mean of its divisors is an integer number (561571627).

Almost surely, 2^1123143253 is an apocalyptic number.

It is an amenable number.

1123143253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123143253 is an equidigital number, since it uses as much as digits as its factorization.

1123143253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 1123143253 is about 33513.3294824612. The cubic root of 1123143253 is about 1039.4694202487.

Adding to 1123143253 its reverse (3523413211), we get a palindrome (4646556464).

The spelling of 1123143253 in words is "one billion, one hundred twenty-three million, one hundred forty-three thousand, two hundred fifty-three".