117780631 has 8 divisors (see below), whose sum is σ = 123016320. Its totient is φ = 112554552.

The previous prime is 117780623. The next prime is 117780643. The reversal of 117780631 is 136087711.

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

It is a cyclic number.

It is not a de Polignac number, because 117780631 - 2³ = 117780623 is a prime.

It is a super-2 number, since 2×117780631² = 27744554077516322, 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 (117780661) 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, 35656 + ... + 38818.

It is an arithmetic number, because the mean of its divisors is an integer number (15377040).

Almost surely, 2^117780631 is an apocalyptic number.

117780631 is a deficient number, since it is larger than the sum of its proper divisors (5235689).

117780631 is a wasteful number, since it uses less digits than its factorization.

117780631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 117780631 is about 10852.6785173062. The cubic root of 117780631 is about 490.1826765777.

The spelling of 117780631 in words is "one hundred seventeen million, seven hundred eighty thousand, six hundred thirty-one".