2101881371 has 8 divisors (see below), whose sum is σ = 2118165504. Its totient is φ = 2085658920.

The previous prime is 2101881349. The next prime is 2101881389. The reversal of 2101881371 is 1731881012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101881371 - 2²⁶ = 2034772507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101881391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54200 + ... + 84506.

It is an arithmetic number, because the mean of its divisors is an integer number (264770688).

Almost surely, 2^2101881371 is an apocalyptic number.

2101881371 is a deficient number, since it is larger than the sum of its proper divisors (16284133).

2101881371 is a wasteful number, since it uses less digits than its factorization.

2101881371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30841.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 2101881371 is about 45846.2797945482. The cubic root of 2101881371 is about 1280.9614706047.

The spelling of 2101881371 in words is "two billion, one hundred one million, eight hundred eighty-one thousand, three hundred seventy-one".