131918858 has 16 divisors (see below), whose sum is σ = 199402560. Its totient is φ = 65453856.

The previous prime is 131918851. The next prime is 131918863. The reversal of 131918858 is 858819131.

It is a happy number.

131918858 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131918851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224441 + ... + 225027.

It is an arithmetic number, because the mean of its divisors is an integer number (12462660).

Almost surely, 2^131918858 is an apocalyptic number.

131918858 is a deficient number, since it is larger than the sum of its proper divisors (67483702).

131918858 is a wasteful number, since it uses less digits than its factorization.

131918858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261.

The product of its digits is 69120, while the sum is 44.

The square root of 131918858 is about 11485.5934979434. The cubic root of 131918858 is about 509.0599857512.

The spelling of 131918858 in words is "one hundred thirty-one million, nine hundred eighteen thousand, eight hundred fifty-eight".