2131633211 has 4 divisors (see below), whose sum is σ = 2134262424. Its totient is φ = 2129004000.

The previous prime is 2131633201. The next prime is 2131633267. The reversal of 2131633211 is 1123361312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131633211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131633201) 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, 1313390 + ... + 1315011.

It is an arithmetic number, because the mean of its divisors is an integer number (533565606).

Almost surely, 2^2131633211 is an apocalyptic number.

2131633211 is a deficient number, since it is larger than the sum of its proper divisors (2629213).

2131633211 is an equidigital number, since it uses as much as digits as its factorization.

2131633211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629212.

The product of its digits is 648, while the sum is 23.

The square root of 2131633211 is about 46169.6135028224. The cubic root of 2131633211 is about 1286.9771198283.

Adding to 2131633211 its reverse (1123361312), we get a palindrome (3254994523).

The spelling of 2131633211 in words is "two billion, one hundred thirty-one million, six hundred thirty-three thousand, two hundred eleven".