131440118 has 4 divisors (see below), whose sum is σ = 197160180. Its totient is φ = 65720058.

The previous prime is 131440117. The next prime is 131440139. The reversal of 131440118 is 811044131.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 131440093 and 131440102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32860028 + ... + 32860031.

It is an arithmetic number, because the mean of its divisors is an integer number (49290045).

Almost surely, 2^131440118 is an apocalyptic number.

131440118 is a deficient number, since it is larger than the sum of its proper divisors (65720062).

131440118 is an equidigital number, since it uses as much as digits as its factorization.

131440118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65720061.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 131440118 is about 11464.7336645907. The cubic root of 131440118 is about 508.4434381103.

Adding to 131440118 its reverse (811044131), we get a palindrome (942484249).

The spelling of 131440118 in words is "one hundred thirty-one million, four hundred forty thousand, one hundred eighteen".