523731656 has 64 divisors (see below), whose sum is σ = 1186281600. Its totient is φ = 211756032.

The previous prime is 523731653. The next prime is 523731661. The reversal of 523731656 is 656137325.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (523731653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293840 + ... + 295616.

It is an arithmetic number, because the mean of its divisors is an integer number (18535650).

Almost surely, 2^523731656 is an apocalyptic number.

523731656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523731656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593140800).

523731656 is an abundant number, since it is smaller than the sum of its proper divisors (662549944).

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

523731656 is a wasteful number, since it uses less digits than its factorization.

523731656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086 (or 2082 counting only the distinct ones).

The product of its digits is 113400, while the sum is 38.

The square root of 523731656 is about 22885.1842028855. The cubic root of 523731656 is about 806.0641538995.

The spelling of 523731656 in words is "five hundred twenty-three million, seven hundred thirty-one thousand, six hundred fifty-six".