117894531 has 8 divisors (see below), whose sum is σ = 158061904. Its totient is φ = 78161760.

The previous prime is 117894529. The next prime is 117894547. The reversal of 117894531 is 135498711.

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

It is not a de Polignac number, because 117894531 - 2¹ = 117894529 is a prime.

It is a super-2 number, since 2×117894531² = 27798240879419922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117894531.

It is not an unprimeable number, because it can be changed into a prime (117894571) 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, 108016 + ... + 109101.

It is an arithmetic number, because the mean of its divisors is an integer number (19757738).

Almost surely, 2^117894531 is an apocalyptic number.

117894531 is a deficient number, since it is larger than the sum of its proper divisors (40167373).

117894531 is a wasteful number, since it uses less digits than its factorization.

117894531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217301.

The product of its digits is 30240, while the sum is 39.

The square root of 117894531 is about 10857.9248017289. The cubic root of 117894531 is about 490.3406363900.

The spelling of 117894531 in words is "one hundred seventeen million, eight hundred ninety-four thousand, five hundred thirty-one".