118340729831 has 4 divisors (see below), whose sum is σ = 118432397064. Its totient is φ = 118249062600.

The previous prime is 118340729813. The next prime is 118340729833. The reversal of 118340729831 is 138927043811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118340729831 is a prime.

It is a super-2 number, since 2×118340729831² (a number of 23 digits) 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 (118340729833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45831680 + ... + 45834261.

It is an arithmetic number, because the mean of its divisors is an integer number (29608099266).

Almost surely, 2^118340729831 is an apocalyptic number.

118340729831 is a deficient number, since it is larger than the sum of its proper divisors (91667233).

118340729831 is an equidigital number, since it uses as much as digits as its factorization.

118340729831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91667232.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 118340729831 in words is "one hundred eighteen billion, three hundred forty million, seven hundred twenty-nine thousand, eight hundred thirty-one".