117511823 has 16 divisors (see below), whose sum is σ = 139959456. Its totient is φ = 97251840.

The previous prime is 117511817. The next prime is 117511873. The reversal of 117511823 is 328115711.

It is a cyclic number.

It is not a de Polignac number, because 117511823 - 2¹² = 117507727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117511873) 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, 4811 + ... + 16067.

It is an arithmetic number, because the mean of its divisors is an integer number (8747466).

Almost surely, 2^117511823 is an apocalyptic number.

117511823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

117511823 is a deficient number, since it is larger than the sum of its proper divisors (22447633).

117511823 is a wasteful number, since it uses less digits than its factorization.

117511823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354.

The product of its digits is 1680, while the sum is 29.

The square root of 117511823 is about 10840.2870349452. The cubic root of 117511823 is about 489.8094816743.

The spelling of 117511823 in words is "one hundred seventeen million, five hundred eleven thousand, eight hundred twenty-three".