118385507731 has 8 divisors (see below), whose sum is σ = 118553367744. Its totient is φ = 118217738880.

The previous prime is 118385507717. The next prime is 118385507771. The reversal of 118385507731 is 137705583811.

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 118385507731 - 2¹¹ = 118385505683 is a prime.

It is a super-2 number, since 2×118385507731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118385507771) 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, 2823835 + ... + 2865451.

It is an arithmetic number, because the mean of its divisors is an integer number (14819170968).

Almost surely, 2^118385507731 is an apocalyptic number.

118385507731 is a deficient number, since it is larger than the sum of its proper divisors (167860013).

118385507731 is an equidigital number, since it uses as much as digits as its factorization.

118385507731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45581.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 118385507731 in words is "one hundred eighteen billion, three hundred eighty-five million, five hundred seven thousand, seven hundred thirty-one".