531353240 has 64 divisors (see below), whose sum is σ = 1372896000. Its totient is φ = 183047040.

The previous prime is 531353227. The next prime is 531353257. The reversal of 531353240 is 42353135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23420 + ... + 40139.

It is an arithmetic number, because the mean of its divisors is an integer number (21451500).

Almost surely, 2^531353240 is an apocalyptic number.

It is an amenable number.

531353240 is an abundant number, since it is smaller than the sum of its proper divisors (841542760).

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

531353240 is a wasteful number, since it uses less digits than its factorization.

531353240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63600 (or 63596 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 531353240 is about 23051.1006244821. The cubic root of 531353240 is about 809.9554108463.

The spelling of 531353240 in words is "five hundred thirty-one million, three hundred fifty-three thousand, two hundred forty".