531515230 has 16 divisors (see below), whose sum is σ = 970203744. Its totient is φ = 209611360.

The previous prime is 531515213. The next prime is 531515287. The reversal of 531515230 is 32515135.

It is a junction number, because it is equal to n+sod(n) for n = 531515195 and 531515204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373597 + ... + 375016.

It is an arithmetic number, because the mean of its divisors is an integer number (60637734).

Almost surely, 2^531515230 is an apocalyptic number.

531515230 is a deficient number, since it is larger than the sum of its proper divisors (438688514).

531515230 is a wasteful number, since it uses less digits than its factorization.

531515230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748691.

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

The square root of 531515230 is about 23054.6140718078. The cubic root of 531515230 is about 810.0377109913.

The spelling of 531515230 in words is "five hundred thirty-one million, five hundred fifteen thousand, two hundred thirty".