531500131 has 8 divisors (see below), whose sum is σ = 538686864. Its totient is φ = 524361600.

The previous prime is 531500063. The next prime is 531500141. The reversal of 531500131 is 131005135.

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

It is a cyclic number.

It is not a de Polignac number, because 531500131 - 2⁷ = 531500003 is a prime.

It is a super-2 number, since 2×531500131² = 564984778506034322, 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 = 531500099 and 531500108.

It is not an unprimeable number, because it can be changed into a prime (531500141) 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, 10431 + ... + 34231.

It is an arithmetic number, because the mean of its divisors is an integer number (67335858).

Almost surely, 2^531500131 is an apocalyptic number.

531500131 is a deficient number, since it is larger than the sum of its proper divisors (7186733).

531500131 is a wasteful number, since it uses less digits than its factorization.

531500131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24101.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 531500131 is about 23054.2866079174. The cubic root of 531500131 is about 810.0300405462.

Adding to 531500131 its reverse (131005135), we get a palindrome (662505266).

The spelling of 531500131 in words is "five hundred thirty-one million, five hundred thousand, one hundred thirty-one".