213886131 has 16 divisors (see below), whose sum is σ = 301664256. Its totient is φ = 134519616.

The previous prime is 213886117. The next prime is 213886133. The reversal of 213886131 is 131688312.

It is not a de Polignac number, because 213886131 - 2⁷ = 213886003 is a prime.

It is a super-2 number, since 2×213886131² = 91494554068298322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213886092 and 213886101.

It is not an unprimeable number, because it can be changed into a prime (213886133) 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 15 ways as a sum of consecutive naturals, for example, 16195 + ... + 26268.

It is an arithmetic number, because the mean of its divisors is an integer number (18854016).

Almost surely, 2^213886131 is an apocalyptic number.

213886131 is a deficient number, since it is larger than the sum of its proper divisors (87778125).

213886131 is a wasteful number, since it uses less digits than its factorization.

213886131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42562.

The product of its digits is 6912, while the sum is 33.

The square root of 213886131 is about 14624.8463581673. The cubic root of 213886131 is about 598.0362939982.

The spelling of 213886131 in words is "two hundred thirteen million, eight hundred eighty-six thousand, one hundred thirty-one".