1125030531 has 8 divisors (see below), whose sum is σ = 1502539024. Its totient is φ = 748771200.

The previous prime is 1125030497. The next prime is 1125030551. The reversal of 1125030531 is 1350305211.

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

It is not a de Polignac number, because 1125030531 - 2⁹ = 1125030019 is a prime.

It is a super-2 number, since 2×1125030531² = 2531387391364283922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125030498 and 1125030507.

It is not an unprimeable number, because it can be changed into a prime (1125030551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310186 + ... + 313791.

It is an arithmetic number, because the mean of its divisors is an integer number (187817378).

Almost surely, 2^1125030531 is an apocalyptic number.

1125030531 is a deficient number, since it is larger than the sum of its proper divisors (377508493).

1125030531 is an equidigital number, since it uses as much as digits as its factorization.

1125030531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624581.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1125030531 is about 33541.4747886851. The cubic root of 1125030531 is about 1040.0513198911.

Adding to 1125030531 its reverse (1350305211), we get a palindrome (2475335742).

The spelling of 1125030531 in words is "one billion, one hundred twenty-five million, thirty thousand, five hundred thirty-one".