131729770019 has 4 divisors (see below), whose sum is σ = 131732844744. Its totient is φ = 131726695296.

The previous prime is 131729769973. The next prime is 131729770031. The reversal of 131729770019 is 910077927131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131729770019 is a prime.

It is a super-2 number, since 2×131729770019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131729710019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472177 + ... + 1559090.

It is an arithmetic number, because the mean of its divisors is an integer number (32933211186).

Almost surely, 2^131729770019 is an apocalyptic number.

131729770019 is a deficient number, since it is larger than the sum of its proper divisors (3074725).

131729770019 is an equidigital number, since it uses as much as digits as its factorization.

131729770019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074724.

The product of its (nonzero) digits is 166698, while the sum is 47.

The spelling of 131729770019 in words is "one hundred thirty-one billion, seven hundred twenty-nine million, seven hundred seventy thousand, nineteen".