531525031 has 4 divisors (see below), whose sum is σ = 531650952. Its totient is φ = 531399112.

The previous prime is 531524971. The next prime is 531525047. The reversal of 531525031 is 130525135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 531525031 - 2¹⁷ = 531393959 is a prime.

It is a super-2 number, since 2×531525031² = 565037717159101922, 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 = 531524987 and 531525005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531525061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56401 + ... + 65146.

It is an arithmetic number, because the mean of its divisors is an integer number (132912738).

Almost surely, 2^531525031 is an apocalyptic number.

531525031 is a deficient number, since it is larger than the sum of its proper divisors (125921).

531525031 is a wasteful number, since it uses less digits than its factorization.

531525031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125920.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 531525031 is about 23054.8266313152. The cubic root of 531525031 is about 810.0426899210.

The spelling of 531525031 in words is "five hundred thirty-one million, five hundred twenty-five thousand, thirty-one".