117231519 has 4 divisors (see below), whose sum is σ = 156308696. Its totient is φ = 78154344.

The previous prime is 117231509. The next prime is 117231523. The reversal of 117231519 is 915132711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915132711 = 3 ⋅305044237.

It is not a de Polignac number, because 117231519 - 2¹² = 117227423 is a prime.

It is a super-2 number, since 2×117231519² = 27486458094094722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117231509) 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, 19538584 + ... + 19538589.

It is an arithmetic number, because the mean of its divisors is an integer number (39077174).

Almost surely, 2^117231519 is an apocalyptic number.

117231519 is a deficient number, since it is larger than the sum of its proper divisors (39077177).

117231519 is an equidigital number, since it uses as much as digits as its factorization.

117231519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39077176.

The product of its digits is 1890, while the sum is 30.

The square root of 117231519 is about 10827.3505069338. The cubic root of 117231519 is about 489.4197198522.

The spelling of 117231519 in words is "one hundred seventeen million, two hundred thirty-one thousand, five hundred nineteen".