531305364 has 24 divisors (see below), whose sum is σ = 1260037408. Its totient is φ = 174198240.

The previous prime is 531305353. The next prime is 531305371. The reversal of 531305364 is 463503135.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362182 + ... + 363645.

Almost surely, 2^531305364 is an apocalyptic number.

It is an amenable number.

531305364 is an abundant number, since it is smaller than the sum of its proper divisors (728732044).

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

531305364 is a wasteful number, since it uses less digits than its factorization.

531305364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725895 (or 725893 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 531305364 is about 23050.0621257297. The cubic root of 531305364 is about 809.9310839096.

Adding to 531305364 its reverse (463503135), we get a palindrome (994808499).

The spelling of 531305364 in words is "five hundred thirty-one million, three hundred five thousand, three hundred sixty-four".