131102018 has 8 divisors (see below), whose sum is σ = 197683200. Its totient is φ = 65207620.

The previous prime is 131102017. The next prime is 131102021. The reversal of 131102018 is 810201131.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131101987 and 131102005.

It is not an unprimeable number, because it can be changed into a prime (131102017) 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, 171218 + ... + 171981.

It is an arithmetic number, because the mean of its divisors is an integer number (24710400).

Almost surely, 2^131102018 is an apocalyptic number.

131102018 is a deficient number, since it is larger than the sum of its proper divisors (66581182).

131102018 is a wasteful number, since it uses less digits than its factorization.

131102018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343392.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 131102018 is about 11449.9789519457. The cubic root of 131102018 is about 508.0071118313.

Adding to 131102018 its reverse (810201131), we get a palindrome (941303149).

The spelling of 131102018 in words is "one hundred thirty-one million, one hundred two thousand, eighteen".