131918851 has 2 divisors, whose sum is σ = 131918852. Its totient is φ = 131918850.

The previous prime is 131918849. The next prime is 131918863. The reversal of 131918851 is 158819131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131918851 - 2¹ = 131918849 is a prime.

Together with 131918849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131918851.

It is not a weakly prime, because it can be changed into another prime (131918551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65959425 + 65959426.

It is an arithmetic number, because the mean of its divisors is an integer number (65959426).

Almost surely, 2^131918851 is an apocalyptic number.

131918851 is a deficient number, since it is larger than the sum of its proper divisors (1).

131918851 is an equidigital number, since it uses as much as digits as its factorization.

131918851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 37.

The square root of 131918851 is about 11485.5931932138. The cubic root of 131918851 is about 509.0599767471.

The spelling of 131918851 in words is "one hundred thirty-one million, nine hundred eighteen thousand, eight hundred fifty-one".