131018779 has 8 divisors (see below), whose sum is σ = 139224528. Its totient is φ = 122868480.

The previous prime is 131018777. The next prime is 131018819. The reversal of 131018779 is 977810131.

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

It is a cyclic number.

It is not a de Polignac number, because 131018779 - 2¹ = 131018777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131018777) 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, 8937 + ... + 18490.

It is an arithmetic number, because the mean of its divisors is an integer number (17403066).

Almost surely, 2^131018779 is an apocalyptic number.

131018779 is a deficient number, since it is larger than the sum of its proper divisors (8205749).

131018779 is a wasteful number, since it uses less digits than its factorization.

131018779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27725.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 131018779 is about 11446.3434772857. The cubic root of 131018779 is about 507.8995748227.

The spelling of 131018779 in words is "one hundred thirty-one million, eighteen thousand, seven hundred seventy-nine".