131207218634 has 8 divisors (see below), whose sum is σ = 207169292640. Its totient is φ = 62150787756.

The previous prime is 131207218627. The next prime is 131207218711. The reversal of 131207218634 is 436812702131.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 3452821543 = 131207218634 / (1 + 3 + 1 + 2 + 0 + 7 + 2 + 1 + 8 + 6 + 3 + 4).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1726410734 + ... + 1726410809.

It is an arithmetic number, because the mean of its divisors is an integer number (25896161580).

Almost surely, 2^131207218634 is an apocalyptic number.

131207218634 is a deficient number, since it is larger than the sum of its proper divisors (75962074006).

131207218634 is a wasteful number, since it uses less digits than its factorization.

131207218634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452821564.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 131207218634 in words is "one hundred thirty-one billion, two hundred seven million, two hundred eighteen thousand, six hundred thirty-four".