2135631271 has 4 divisors (see below), whose sum is σ = 2146696912. Its totient is φ = 2124565632.

The previous prime is 2135631257. The next prime is 2135631283. The reversal of 2135631271 is 1721365312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2135631271 - 2⁷ = 2135631143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135631221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5532531 + ... + 5532916.

It is an arithmetic number, because the mean of its divisors is an integer number (536674228).

Almost surely, 2^2135631271 is an apocalyptic number.

2135631271 is a deficient number, since it is larger than the sum of its proper divisors (11065641).

2135631271 is a wasteful number, since it uses less digits than its factorization.

2135631271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11065640.

The product of its digits is 7560, while the sum is 31.

The square root of 2135631271 is about 46212.8907448993. The cubic root of 2135631271 is about 1287.7812291186.

Adding to 2135631271 its reverse (1721365312), we get a palindrome (3856996583).

The spelling of 2135631271 in words is "two billion, one hundred thirty-five million, six hundred thirty-one thousand, two hundred seventy-one".