231056211 has 4 divisors (see below), whose sum is σ = 308074952. Its totient is φ = 154037472.

The previous prime is 231056209. The next prime is 231056219. The reversal of 231056211 is 112650132.

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

It is not a de Polignac number, because 231056211 - 2¹ = 231056209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231056219) 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, 38509366 + ... + 38509371.

It is an arithmetic number, because the mean of its divisors is an integer number (77018738).

Almost surely, 2^231056211 is an apocalyptic number.

231056211 is a deficient number, since it is larger than the sum of its proper divisors (77018741).

231056211 is an equidigital number, since it uses as much as digits as its factorization.

231056211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77018740.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 231056211 is about 15200.5332472252. The cubic root of 231056211 is about 613.6290089095.

The spelling of 231056211 in words is "two hundred thirty-one million, fifty-six thousand, two hundred eleven".