211223230131 has 8 divisors (see below), whose sum is σ = 281633115280. Its totient is φ = 140814415872.

The previous prime is 211223230103. The next prime is 211223230151. The reversal of 211223230131 is 131032322112.

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

It is not a de Polignac number, because 211223230131 - 2⁹ = 211223229619 is a prime.

It is a super-3 number, since 3×211223230131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211223230098 and 211223230107.

It is not an unprimeable number, because it can be changed into a prime (211223230151) 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, 544731 + ... + 848043.

It is an arithmetic number, because the mean of its divisors is an integer number (35204139410).

Almost surely, 2^211223230131 is an apocalyptic number.

211223230131 is a deficient number, since it is larger than the sum of its proper divisors (70409885149).

211223230131 is a wasteful number, since it uses less digits than its factorization.

211223230131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535445.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211223230131 its reverse (131032322112), we get a palindrome (342255552243).

The spelling of 211223230131 in words is "two hundred eleven billion, two hundred twenty-three million, two hundred thirty thousand, one hundred thirty-one".