211330131 has 16 divisors (see below), whose sum is σ = 292162560. Its totient is φ = 135732960.

The previous prime is 211330121. The next prime is 211330177. The reversal of 211330131 is 131033112.

It is not a de Polignac number, because 211330131 - 2⁹ = 211329619 is a prime.

It is a super-2 number, since 2×211330131² = 89320848536954322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211330131.

It is not an unprimeable number, because it can be changed into a prime (211330121) 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, 16336 + ... + 26258.

It is an arithmetic number, because the mean of its divisors is an integer number (18260160).

Almost surely, 2^211330131 is an apocalyptic number.

211330131 is a deficient number, since it is larger than the sum of its proper divisors (80832429).

211330131 is a wasteful number, since it uses less digits than its factorization.

211330131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 211330131 is about 14537.1981825935. The cubic root of 211330131 is about 595.6445065212.

Adding to 211330131 its reverse (131033112), we get a palindrome (342363243).

The spelling of 211330131 in words is "two hundred eleven million, three hundred thirty thousand, one hundred thirty-one".