531072103 has 4 divisors (see below), whose sum is σ = 531481608. Its totient is φ = 530662600.

The previous prime is 531072071. The next prime is 531072107. The reversal of 531072103 is 301270135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301270135 = 5 ⋅60254027.

It is a cyclic number.

It is not a de Polignac number, because 531072103 - 2⁵ = 531072071 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531072107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202801 + ... + 205402.

It is an arithmetic number, because the mean of its divisors is an integer number (132870402).

Almost surely, 2^531072103 is an apocalyptic number.

531072103 is a deficient number, since it is larger than the sum of its proper divisors (409505).

531072103 is a wasteful number, since it uses less digits than its factorization.

531072103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409504.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 531072103 is about 23045.0016923410. The cubic root of 531072103 is about 809.8125375253.

The spelling of 531072103 in words is "five hundred thirty-one million, seventy-two thousand, one hundred three".