211231013423 has 8 divisors (see below), whose sum is σ = 211971642768. Its totient is φ = 210491142784.

The previous prime is 211231013387. The next prime is 211231013453. The reversal of 211231013423 is 324310132112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211231013423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211231013453) 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, 371015 + ... + 748407.

It is an arithmetic number, because the mean of its divisors is an integer number (26496455346).

Almost surely, 2^211231013423 is an apocalyptic number.

211231013423 is a deficient number, since it is larger than the sum of its proper divisors (740629345).

211231013423 is a wasteful number, since it uses less digits than its factorization.

211231013423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379353.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 211231013423 its reverse (324310132112), we get a palindrome (535541145535).

The spelling of 211231013423 in words is "two hundred eleven billion, two hundred thirty-one million, thirteen thousand, four hundred twenty-three".