117015823 has 4 divisors (see below), whose sum is σ = 117039240. Its totient is φ = 116992408.

The previous prime is 117015817. The next prime is 117015839. The reversal of 117015823 is 328510711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328510711 = 3253 ⋅100987.

It is a cyclic number.

It is not a de Polignac number, because 117015823 - 2⁵ = 117015791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117015791 and 117015800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117015883) 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, 865 + ... + 15322.

It is an arithmetic number, because the mean of its divisors is an integer number (29259810).

Almost surely, 2^117015823 is an apocalyptic number.

117015823 is a deficient number, since it is larger than the sum of its proper divisors (23417).

117015823 is an equidigital number, since it uses as much as digits as its factorization.

117015823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23416.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 117015823 is about 10817.3852200982. The cubic root of 117015823 is about 489.1193720529.

The spelling of 117015823 in words is "one hundred seventeen million, fifteen thousand, eight hundred twenty-three".