211233330231 has 64 divisors (see below), whose sum is σ = 363796945920. Its totient is φ = 105788067840.

The previous prime is 211233330229. The next prime is 211233330313. The reversal of 211233330231 is 132033332112.

It is not a de Polignac number, because 211233330231 - 2¹ = 211233330229 is a prime.

It is a super-2 number, since 2×211233330231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211233330331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4485001 + ... + 4531853.

It is an arithmetic number, because the mean of its divisors is an integer number (5684327280).

Almost surely, 2^211233330231 is an apocalyptic number.

211233330231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211233330231 is a deficient number, since it is larger than the sum of its proper divisors (152563615689).

211233330231 is a wasteful number, since it uses less digits than its factorization.

211233330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47576.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 211233330231 its reverse (132033332112), we get a palindrome (343266662343).

The spelling of 211233330231 in words is "two hundred eleven billion, two hundred thirty-three million, three hundred thirty thousand, two hundred thirty-one".