214431223421 has 8 divisors (see below), whose sum is σ = 216939191040. Its totient is φ = 211925447712.

The previous prime is 214431223411. The next prime is 214431223423. The reversal of 214431223421 is 124322134412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214431223421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214431223423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350765 + ... + 742898.

It is an arithmetic number, because the mean of its divisors is an integer number (27117398880).

Almost surely, 2^214431223421 is an apocalyptic number.

It is an amenable number.

214431223421 is a deficient number, since it is larger than the sum of its proper divisors (2507967619).

214431223421 is a wasteful number, since it uses less digits than its factorization.

214431223421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095955.

The product of its digits is 9216, while the sum is 29.

Adding to 214431223421 its reverse (124322134412), we get a palindrome (338753357833).

The spelling of 214431223421 in words is "two hundred fourteen billion, four hundred thirty-one million, two hundred twenty-three thousand, four hundred twenty-one".