1123000531 has 2 divisors, whose sum is σ = 1123000532. Its totient is φ = 1123000530.

The previous prime is 1123000477. The next prime is 1123000547. The reversal of 1123000531 is 1350003211.

It is an a-pointer prime, because the next prime (1123000547) can be obtained adding 1123000531 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123000531 - 2⁹ = 1123000019 is a prime.

It is a super-2 number, since 2×1123000531² = 2522260385252563922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123000561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561500265 + 561500266.

It is an arithmetic number, because the mean of its divisors is an integer number (561500266).

Almost surely, 2^1123000531 is an apocalyptic number.

1123000531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123000531 is an equidigital number, since it uses as much as digits as its factorization.

1123000531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1123000531 is about 33511.2000829573. The cubic root of 1123000531 is about 1039.4253886322.

Adding to 1123000531 its reverse (1350003211), we get a palindrome (2473003742).

The spelling of 1123000531 in words is "one billion, one hundred twenty-three million, five hundred thirty-one", and thus it is an aban number.