214431131 has 4 divisors (see below), whose sum is σ = 225717000. Its totient is φ = 203145264.

The previous prime is 214431121. The next prime is 214431137. The reversal of 214431131 is 131134412.

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

It is not a de Polignac number, because 214431131 - 2¹⁰ = 214430107 is a prime.

It is a super-2 number, since 2×214431131² = 91961419883878322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214431137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642906 + ... + 5642943.

It is an arithmetic number, because the mean of its divisors is an integer number (56429250).

Almost surely, 2^214431131 is an apocalyptic number.

214431131 is a deficient number, since it is larger than the sum of its proper divisors (11285869).

214431131 is a wasteful number, since it uses less digits than its factorization.

214431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285868.

The product of its digits is 288, while the sum is 20.

The square root of 214431131 is about 14643.4671782334. The cubic root of 214431131 is about 598.5438122396.

Adding to 214431131 its reverse (131134412), we get a palindrome (345565543).

The spelling of 214431131 in words is "two hundred fourteen million, four hundred thirty-one thousand, one hundred thirty-one".