117331521 has 8 divisors (see below), whose sum is σ = 156705600. Its totient is φ = 78089232.

The previous prime is 117331519. The next prime is 117331537. The reversal of 117331521 is 125133711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117331521 - 2¹ = 117331519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117331491 and 117331500.

It is not an unprimeable number, because it can be changed into a prime (117331021) 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, 30850 + ... + 34443.

It is an arithmetic number, because the mean of its divisors is an integer number (19588200).

Almost surely, 2^117331521 is an apocalyptic number.

It is an amenable number.

117331521 is a deficient number, since it is larger than the sum of its proper divisors (39374079).

117331521 is an equidigital number, since it uses as much as digits as its factorization.

117331521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65895.

The product of its digits is 630, while the sum is 24.

The square root of 117331521 is about 10831.9675498037. The cubic root of 117331521 is about 489.5588435317.

The spelling of 117331521 in words is "one hundred seventeen million, three hundred thirty-one thousand, five hundred twenty-one".