2131847665371 has 6 divisors (see below), whose sum is σ = 3079335516660. Its totient is φ = 1421231776908.

The previous prime is 2131847665307. The next prime is 2131847665393. The reversal of 2131847665371 is 1735667481312.

2131847665371 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 8 + 47 + 66 + 537 + 1 = 666.

It is not a de Polignac number, because 2131847665371 - 2⁶ = 2131847665307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131847665301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118435981401 + ... + 118435981418.

It is an arithmetic number, because the mean of its divisors is an integer number (513222586110).

Almost surely, 2^{2131847665371} is an apocalyptic number.

2131847665371 is a deficient number, since it is larger than the sum of its proper divisors (947487851289).

2131847665371 is a wasteful number, since it uses less digits than its factorization.

2131847665371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236871962825 (or 236871962822 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 2131847665371 in words is "two trillion, one hundred thirty-one billion, eight hundred forty-seven million, six hundred sixty-five thousand, three hundred seventy-one".