214203431 has 4 divisors (see below), whose sum is σ = 230680632. Its totient is φ = 197726232.

The previous prime is 214203403. The next prime is 214203433. The reversal of 214203431 is 134302412.

214203431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 214203431 - 2¹⁰ = 214202407 is a prime.

It is a super-2 number, since 2×214203431² = 91766219704343522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214203433) 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, 8238581 + ... + 8238606.

It is an arithmetic number, because the mean of its divisors is an integer number (57670158).

Almost surely, 2^214203431 is an apocalyptic number.

214203431 is a deficient number, since it is larger than the sum of its proper divisors (16477201).

214203431 is a wasteful number, since it uses less digits than its factorization.

214203431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16477200.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 214203431 is about 14635.6903151167. The cubic root of 214203431 is about 598.3318767579.

Adding to 214203431 its reverse (134302412), we get a palindrome (348505843).

The spelling of 214203431 in words is "two hundred fourteen million, two hundred three thousand, four hundred thirty-one".