211230423423 has 12 divisors (see below), whose sum is σ = 305487767520. Its totient is φ = 140646210336.

The previous prime is 211230423421. The next prime is 211230423461. The reversal of 211230423423 is 324324032112.

211230423423 is a `hidden beast` number, since 2 + 1 + 1 + 230 + 4 + 2 + 3 + 423 = 666.

It is not a de Polignac number, because 211230423423 - 2¹ = 211230423421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211230423421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14498311 + ... + 14512872.

It is an arithmetic number, because the mean of its divisors is an integer number (25457313960).

Almost surely, 2^211230423423 is an apocalyptic number.

211230423423 is a deficient number, since it is larger than the sum of its proper divisors (94257344097).

211230423423 is a wasteful number, since it uses less digits than its factorization.

211230423423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29011998 (or 29011995 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 211230423423 its reverse (324324032112), we get a palindrome (535554455535).

The spelling of 211230423423 in words is "two hundred eleven billion, two hundred thirty million, four hundred twenty-three thousand, four hundred twenty-three".