211393233 has 32 divisors (see below), whose sum is σ = 319524480. Its totient is φ = 139828032.

The previous prime is 211393229. The next prime is 211393319. The reversal of 211393233 is 332393112.

211393233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211393233 - 2² = 211393229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 211393197 and 211393206.

It is not an unprimeable number, because it can be changed into a prime (211393223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356185 + ... + 356777.

It is an arithmetic number, because the mean of its divisors is an integer number (9985140).

Almost surely, 2^211393233 is an apocalyptic number.

It is an amenable number.

211393233 is a deficient number, since it is larger than the sum of its proper divisors (108131247).

211393233 is an frugal number, since it uses more digits than its factorization.

211393233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 759 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 211393233 is about 14539.3683838054. The cubic root of 211393233 is about 595.7037859987.

The spelling of 211393233 in words is "two hundred eleven million, three hundred ninety-three thousand, two hundred thirty-three".