211031423 has 8 divisors (see below), whose sum is σ = 222384000. Its totient is φ = 199703448.

The previous prime is 211031419. The next prime is 211031453. The reversal of 211031423 is 324130112.

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

It is a cyclic number.

It is not a de Polignac number, because 211031423 - 2² = 211031419 is a prime.

It is a super-2 number, since 2×211031423² = 89068522986809858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211031413) 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, 13028 + ... + 24326.

It is an arithmetic number, because the mean of its divisors is an integer number (27798000).

Almost surely, 2^211031423 is an apocalyptic number.

211031423 is a deficient number, since it is larger than the sum of its proper divisors (11352577).

211031423 is a wasteful number, since it uses less digits than its factorization.

211031423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12301.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 211031423 is about 14526.9206303332. The cubic root of 211031423 is about 595.3637330634.

Adding to 211031423 its reverse (324130112), we get a palindrome (535161535).

It can be divided in two parts, 2110 and 31423, that added together give a palindrome (33533).

The spelling of 211031423 in words is "two hundred eleven million, thirty-one thousand, four hundred twenty-three".