118781307 has 6 divisors (see below), whose sum is σ = 171573012. Its totient is φ = 79187532.

The previous prime is 118781287. The next prime is 118781339. The reversal of 118781307 is 703187811.

It is not a de Polignac number, because 118781307 - 2¹⁴ = 118764923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118781107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6598953 + ... + 6598970.

It is an arithmetic number, because the mean of its divisors is an integer number (28595502).

Almost surely, 2^118781307 is an apocalyptic number.

118781307 is a deficient number, since it is larger than the sum of its proper divisors (52791705).

118781307 is a wasteful number, since it uses less digits than its factorization.

118781307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13197929 (or 13197926 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The square root of 118781307 is about 10898.6837278637. The cubic root of 118781307 is about 491.5669772158.

The spelling of 118781307 in words is "one hundred eighteen million, seven hundred eighty-one thousand, three hundred seven".