123531073 has 16 divisors (see below), whose sum is σ = 129830400. Its totient is φ = 117429120.

The previous prime is 123531071. The next prime is 123531077. The reversal of 123531073 is 370135321.

It is a cyclic number.

It is not a de Polignac number, because 123531073 - 2¹ = 123531071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123531071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539323 + ... + 539551.

It is an arithmetic number, because the mean of its divisors is an integer number (8114400).

Almost surely, 2^123531073 is an apocalyptic number.

It is an amenable number.

123531073 is a deficient number, since it is larger than the sum of its proper divisors (6299327).

123531073 is a wasteful number, since it uses less digits than its factorization.

123531073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 123531073 is about 11114.4533378840. The cubic root of 123531073 is about 498.0337081961.

Adding to 123531073 its reverse (370135321), we get a palindrome (493666394).

The spelling of 123531073 in words is "one hundred twenty-three million, five hundred thirty-one thousand, seventy-three".