211248231 has 8 divisors (see below), whose sum is σ = 281735664. Its totient is φ = 140796480.

The previous prime is 211248211. The next prime is 211248241. The reversal of 211248231 is 132842112.

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

It is not a de Polignac number, because 211248231 - 2¹³ = 211240039 is a prime.

It is a super-2 number, since 2×211248231² = 89251630201258722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211248211) 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, 11721 + ... + 23661.

It is an arithmetic number, because the mean of its divisors is an integer number (35216958).

Almost surely, 2^211248231 is an apocalyptic number.

211248231 is a deficient number, since it is larger than the sum of its proper divisors (70487433).

211248231 is a wasteful number, since it uses less digits than its factorization.

211248231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17841.

The product of its digits is 768, while the sum is 24.

The square root of 211248231 is about 14534.3809981712. The cubic root of 211248231 is about 595.5675501684.

The spelling of 211248231 in words is "two hundred eleven million, two hundred forty-eight thousand, two hundred thirty-one".