231420211 has 8 divisors (see below), whose sum is σ = 256227264. Its totient is φ = 207241320.

The previous prime is 231420187. The next prime is 231420221. The reversal of 231420211 is 112024132.

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

It is not a de Polignac number, because 231420211 - 2¹³ = 231412019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231420221) 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, 156265 + ... + 157738.

It is an arithmetic number, because the mean of its divisors is an integer number (32028408).

Almost surely, 2^231420211 is an apocalyptic number.

231420211 is a deficient number, since it is larger than the sum of its proper divisors (24807053).

231420211 is a wasteful number, since it uses less digits than its factorization.

231420211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314081.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 231420211 is about 15212.5017995069. The cubic root of 231420211 is about 613.9510716209.

Adding to 231420211 its reverse (112024132), we get a palindrome (343444343).

The spelling of 231420211 in words is "two hundred thirty-one million, four hundred twenty thousand, two hundred eleven".