118243946031 has 4 divisors (see below), whose sum is σ = 157658594712. Its totient is φ = 78829297352.

The previous prime is 118243946017. The next prime is 118243946087. The reversal of 118243946031 is 130649342811.

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 118243946031 - 2⁵ = 118243945999 is a prime.

It is a super-2 number, since 2×118243946031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118243946231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19707324336 + ... + 19707324341.

It is an arithmetic number, because the mean of its divisors is an integer number (39414648678).

Almost surely, 2^118243946031 is an apocalyptic number.

118243946031 is a deficient number, since it is larger than the sum of its proper divisors (39414648681).

118243946031 is an equidigital number, since it uses as much as digits as its factorization.

118243946031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39414648680.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 118243946031 in words is "one hundred eighteen billion, two hundred forty-three million, nine hundred forty-six thousand, thirty-one".