123530000531 has 48 divisors (see below), whose sum is σ = 150827417280. Its totient is φ = 100767663360.

The previous prime is 123530000509. The next prime is 123530000543. The reversal of 123530000531 is 135000035321.

It is not a de Polignac number, because 123530000531 - 2⁶ = 123530000467 is a prime.

It is a super-2 number, since 2×123530000531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123530000497 and 123530000506.

It is not an unprimeable number, because it can be changed into a prime (123530008531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34494161 + ... + 34497741.

It is an arithmetic number, because the mean of its divisors is an integer number (3142237860).

Almost surely, 2^123530000531 is an apocalyptic number.

123530000531 is a deficient number, since it is larger than the sum of its proper divisors (27297416749).

123530000531 is a wasteful number, since it uses less digits than its factorization.

123530000531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4037 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 123530000531 its reverse (135000035321), we get a palindrome (258530035852).

The spelling of 123530000531 in words is "one hundred twenty-three billion, five hundred thirty million, five hundred thirty-one", and thus it is an aban number.