136831619321 has 4 divisors (see below), whose sum is σ = 137816019600. Its totient is φ = 135847219044.

The previous prime is 136831619291. The next prime is 136831619381. The reversal of 136831619321 is 123916138631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136831619321 - 2¹⁴ = 136831602937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136831619381) 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, 492199931 + ... + 492200208.

It is an arithmetic number, because the mean of its divisors is an integer number (34454004900).

Almost surely, 2^136831619321 is an apocalyptic number.

It is an amenable number.

136831619321 is a deficient number, since it is larger than the sum of its proper divisors (984400279).

136831619321 is an equidigital number, since it uses as much as digits as its factorization.

136831619321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984400278.

The product of its digits is 139968, while the sum is 44.

The spelling of 136831619321 in words is "one hundred thirty-six billion, eight hundred thirty-one million, six hundred nineteen thousand, three hundred twenty-one".