117820523 has 4 divisors (see below), whose sum is σ = 124751160. Its totient is φ = 110889888.

The previous prime is 117820519. The next prime is 117820561. The reversal of 117820523 is 325028711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117820523 - 2² = 117820519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117820583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3465293 + ... + 3465326.

It is an arithmetic number, because the mean of its divisors is an integer number (31187790).

Almost surely, 2^117820523 is an apocalyptic number.

117820523 is a deficient number, since it is larger than the sum of its proper divisors (6930637).

117820523 is an equidigital number, since it uses as much as digits as its factorization.

117820523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930636.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 117820523 is about 10854.5162490090. The cubic root of 117820523 is about 490.2380115393.

The spelling of 117820523 in words is "one hundred seventeen million, eight hundred twenty thousand, five hundred twenty-three".