531242103 has 8 divisors (see below), whose sum is σ = 809511808. Its totient is φ = 303566904.

The previous prime is 531242087. The next prime is 531242111. The reversal of 531242103 is 301242135.

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

It is not a de Polignac number, because 531242103 - 2⁴ = 531242087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 25297243 = 531242103 / (5 + 3 + 1 + 2 + 4 + 2 + 1 + 0 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 531242103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531242183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12648601 + ... + 12648642.

It is an arithmetic number, because the mean of its divisors is an integer number (101188976).

Almost surely, 2^531242103 is an apocalyptic number.

531242103 is a deficient number, since it is larger than the sum of its proper divisors (278269705).

531242103 is a wasteful number, since it uses less digits than its factorization.

531242103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25297253.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 531242103 is about 23048.6898326130. The cubic root of 531242103 is about 809.8989372462.

Adding to 531242103 its reverse (301242135), we get a palindrome (832484238).

The spelling of 531242103 in words is "five hundred thirty-one million, two hundred forty-two thousand, one hundred three".