118731530 has 8 divisors (see below), whose sum is σ = 213716772. Its totient is φ = 47492608.

The previous prime is 118731527. The next prime is 118731533. The reversal of 118731530 is 35137811.

It is an interprime number because it is at equal distance from previous prime (118731527) and next prime (118731533).

It can be written as a sum of positive squares in 2 ways, for example, as 118613881 + 117649 = 10891^2 + 343^2 .

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

It is a super-2 number, since 2×118731530² = 28194352432281800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118731493 and 118731502.

It is not an unprimeable number, because it can be changed into a prime (118731533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5936567 + ... + 5936586.

Almost surely, 2^118731530 is an apocalyptic number.

118731530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118731530 is a deficient number, since it is larger than the sum of its proper divisors (94985242).

118731530 is a wasteful number, since it uses less digits than its factorization.

118731530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11873160.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 118731530 is about 10896.3998641753. The cubic root of 118731530 is about 491.4983015720.

The spelling of 118731530 in words is "one hundred eighteen million, seven hundred thirty-one thousand, five hundred thirty".