211423131234 has 96 divisors (see below), whose sum is σ = 557587395456. Its totient is φ = 58773962880.

The previous prime is 211423131223. The next prime is 211423131247. The reversal of 211423131234 is 432131324112.

211423131234 is a `hidden beast` number, since 2 + 1 + 1 + 423 + 1 + 3 + 1 + 234 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 211423131198 and 211423131207.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 713947 + ... + 965694.

It is an arithmetic number, because the mean of its divisors is an integer number (5808202036).

Almost surely, 2^211423131234 is an apocalyptic number.

211423131234 is an abundant number, since it is smaller than the sum of its proper divisors (346164264222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211423131234 is a wasteful number, since it uses less digits than its factorization.

211423131234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679702 (or 1679690 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 211423131234 its reverse (432131324112), we get a palindrome (643554455346).

The spelling of 211423131234 in words is "two hundred eleven billion, four hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-four".