2136971231 has 16 divisors (see below), whose sum is σ = 2237276160. Its totient is φ = 2039584800.

The previous prime is 2136971219. The next prime is 2136971293. The reversal of 2136971231 is 1321796312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2136971231 is a prime.

It is a super-2 number, since 2×2136971231² = 9133292084243310722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2136971191 and 2136971200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136971131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314690 + ... + 321408.

It is an arithmetic number, because the mean of its divisors is an integer number (139829760).

Almost surely, 2^2136971231 is an apocalyptic number.

2136971231 is a deficient number, since it is larger than the sum of its proper divisors (100304929).

2136971231 is a wasteful number, since it uses less digits than its factorization.

2136971231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934.

The product of its digits is 13608, while the sum is 35.

The square root of 2136971231 is about 46227.3861579908. The cubic root of 2136971231 is about 1288.0505038435.

The spelling of 2136971231 in words is "two billion, one hundred thirty-six million, nine hundred seventy-one thousand, two hundred thirty-one".