117769531 has 4 divisors (see below), whose sum is σ = 128475864. Its totient is φ = 107063200.

The previous prime is 117769529. The next prime is 117769541. The reversal of 117769531 is 135967711.

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 117769531 - 2¹ = 117769529 is a prime.

It is a super-2 number, since 2×117769531² = 27739324863919922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117769541) 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, 5353150 + ... + 5353171.

It is an arithmetic number, because the mean of its divisors is an integer number (32118966).

Almost surely, 2^117769531 is an apocalyptic number.

117769531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117769531 is a deficient number, since it is larger than the sum of its proper divisors (10706333).

117769531 is a wasteful number, since it uses less digits than its factorization.

117769531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706332.

The product of its digits is 39690, while the sum is 40.

The square root of 117769531 is about 10852.1671107664. The cubic root of 117769531 is about 490.1672773320.

The spelling of 117769531 in words is "one hundred seventeen million, seven hundred sixty-nine thousand, five hundred thirty-one".