116731385 has 8 divisors (see below), whose sum is σ = 140139720. Its totient is φ = 93343744.

The previous prime is 116731361. The next prime is 116731393. The reversal of 116731385 is 583137611.

It can be written as a sum of positive squares in 4 ways, for example, as 22505536 + 94225849 = 4744^2 + 9707^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116731385 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13139 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (17517465).

Almost surely, 2^116731385 is an apocalyptic number.

It is an amenable number.

116731385 is a deficient number, since it is larger than the sum of its proper divisors (23408335).

116731385 is an equidigital number, since it uses as much as digits as its factorization.

116731385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347.

The product of its digits is 15120, while the sum is 35.

The square root of 116731385 is about 10804.2299586782. The cubic root of 116731385 is about 488.7227390424.

Adding to 116731385 its reverse (583137611), we get a palindrome (699868996).

The spelling of 116731385 in words is "one hundred sixteen million, seven hundred thirty-one thousand, three hundred eighty-five".