531311046 has 128 divisors (see below), whose sum is σ = 1323786240. Its totient is φ = 138931200.

The previous prime is 531311029. The next prime is 531311069. The reversal of 531311046 is 640113135.

It is a super-2 number, since 2×531311046² = 564582855203228232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1975000 + ... + 1975268.

It is an arithmetic number, because the mean of its divisors is an integer number (10342080).

Almost surely, 2^531311046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531311046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661893120).

531311046 is an abundant number, since it is smaller than the sum of its proper divisors (792475194).

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

531311046 is a wasteful number, since it uses less digits than its factorization.

531311046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 531311046 is about 23050.1853788641. The cubic root of 531311046 is about 809.9339711456.

The spelling of 531311046 in words is "five hundred thirty-one million, three hundred eleven thousand, forty-six".