531156330 has 48 divisors (see below), whose sum is σ = 1462246344. Its totient is φ = 133309440.

The previous prime is 531156281. The next prime is 531156331. The reversal of 531156330 is 33651135.

It can be written as a sum of positive squares in 4 ways, for example, as 495908361 + 35247969 = 22269^2 + 5937^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531156294 and 531156303.

It is not an unprimeable number, because it can be changed into a prime (531156331) 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 23 ways as a sum of consecutive naturals, for example, 172051 + ... + 175110.

Almost surely, 2^531156330 is an apocalyptic number.

531156330 is an abundant number, since it is smaller than the sum of its proper divisors (931090014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531156330 is a wasteful number, since it uses less digits than its factorization.

531156330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347191 (or 347188 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 531156330 is about 23046.8290660559. The cubic root of 531156330 is about 809.8553468254.

The spelling of 531156330 in words is "five hundred thirty-one million, one hundred fifty-six thousand, three hundred thirty".