131868434345 has 16 divisors (see below), whose sum is σ = 158742923520. Its totient is φ = 105161134464.

The previous prime is 131868434297. The next prime is 131868434377. The reversal of 131868434345 is 543434868131.

It is a cyclic number.

It is not a de Polignac number, because 131868434345 - 2³⁶ = 63148957609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131868434293 and 131868434302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4523426 + ... + 4552484.

It is an arithmetic number, because the mean of its divisors is an integer number (9921432720).

Almost surely, 2^131868434345 is an apocalyptic number.

It is an amenable number.

131868434345 is a deficient number, since it is larger than the sum of its proper divisors (26874489175).

131868434345 is a wasteful number, since it uses less digits than its factorization.

131868434345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31904.

The product of its digits is 3317760, while the sum is 50.

The spelling of 131868434345 in words is "one hundred thirty-one billion, eight hundred sixty-eight million, four hundred thirty-four thousand, three hundred forty-five".