214631421 has 16 divisors (see below), whose sum is σ = 290188800. Its totient is φ = 141090048.

The previous prime is 214631399. The next prime is 214631491. The reversal of 214631421 is 124136412.

It is not a de Polignac number, because 214631421 - 2⁶ = 214631357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214631391 and 214631400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214631491) 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, 121140 + ... + 122898.

It is an arithmetic number, because the mean of its divisors is an integer number (18136800).

Almost surely, 2^214631421 is an apocalyptic number.

It is an amenable number.

214631421 is a deficient number, since it is larger than the sum of its proper divisors (75557379).

214631421 is a wasteful number, since it uses less digits than its factorization.

214631421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308.

The product of its digits is 1152, while the sum is 24.

The square root of 214631421 is about 14650.3044678259. The cubic root of 214631421 is about 598.7301114234.

Adding to 214631421 its reverse (124136412), we get a palindrome (338767833).

The spelling of 214631421 in words is "two hundred fourteen million, six hundred thirty-one thousand, four hundred twenty-one".