211144131 has 128 divisors (see below), whose sum is σ = 398131200. Its totient is φ = 108864000.

The previous prime is 211144127. The next prime is 211144133. The reversal of 211144131 is 131441112.

It is not a de Polignac number, because 211144131 - 2² = 211144127 is a prime.

It is a super-2 number, since 2×211144131² = 89163688111490322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211144133) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2973826 + ... + 2973896.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400).

Almost surely, 2^211144131 is an apocalyptic number.

211144131 is a deficient number, since it is larger than the sum of its proper divisors (186987069).

211144131 is a wasteful number, since it uses less digits than its factorization.

211144131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 152 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 211144131 is about 14530.7993930134. The cubic root of 211144131 is about 595.4697051380.

Adding to 211144131 its reverse (131441112), we get a palindrome (342585243).

The spelling of 211144131 in words is "two hundred eleven million, one hundred forty-four thousand, one hundred thirty-one".