531134656 has 56 divisors (see below), whose sum is σ = 1171716224. Its totient is φ = 237219840.

The previous prime is 531134651. The next prime is 531134657. The reversal of 531134656 is 656431135.

It is not an unprimeable number, because it can be changed into a prime (531134651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15496 + ... + 36088.

It is an arithmetic number, because the mean of its divisors is an integer number (20923504).

Almost surely, 2^531134656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531134656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585858112).

531134656 is an abundant number, since it is smaller than the sum of its proper divisors (640581568).

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

531134656 is a wasteful number, since it uses less digits than its factorization.

531134656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20649 (or 20639 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 531134656 is about 23046.3588447286. The cubic root of 531134656 is about 809.8443312087.

The spelling of 531134656 in words is "five hundred thirty-one million, one hundred thirty-four thousand, six hundred fifty-six".