2131871854 has 8 divisors (see below), whose sum is σ = 3654637488. Its totient is φ = 913659360.

The previous prime is 2131871851. The next prime is 2131871857. The reversal of 2131871854 is 4581781312.

It is an interprime number because it is at equal distance from previous prime (2131871851) and next prime (2131871857).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131871851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76138267 + ... + 76138294.

It is an arithmetic number, because the mean of its divisors is an integer number (456829686).

Almost surely, 2^2131871854 is an apocalyptic number.

2131871854 is a deficient number, since it is larger than the sum of its proper divisors (1522765634).

2131871854 is a wasteful number, since it uses less digits than its factorization.

2131871854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152276570.

The product of its digits is 53760, while the sum is 40.

The square root of 2131871854 is about 46172.1978467562. The cubic root of 2131871854 is about 1287.0251450731.

The spelling of 2131871854 in words is "two billion, one hundred thirty-one million, eight hundred seventy-one thousand, eight hundred fifty-four".