2131705837 has 8 divisors (see below), whose sum is σ = 2267225856. Its totient is φ = 1997310912.

The previous prime is 2131705787. The next prime is 2131705841. The reversal of 2131705837 is 7385071312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131705837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131705796 and 2131705805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131705847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277363 + ... + 284944.

It is an arithmetic number, because the mean of its divisors is an integer number (283403232).

Almost surely, 2^2131705837 is an apocalyptic number.

It is an amenable number.

2131705837 is a deficient number, since it is larger than the sum of its proper divisors (135520019).

2131705837 is a wasteful number, since it uses less digits than its factorization.

2131705837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562547.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 2131705837 is about 46170.4000090967. The cubic root of 2131705837 is about 1286.9917356854.

The spelling of 2131705837 in words is "two billion, one hundred thirty-one million, seven hundred five thousand, eight hundred thirty-seven".