213423131400 has 96 divisors (see below), whose sum is σ = 664186551840. Its totient is φ = 56691343360.

The previous prime is 213423131377. The next prime is 213423131401. The reversal of 213423131400 is 4131324312.

It is a happy number.

213423131400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (213423131401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537834 + ... + 846233.

It is an arithmetic number, because the mean of its divisors is an integer number (6918609915).

Almost surely, 2^213423131400 is an apocalyptic number.

213423131400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213423131400 is an abundant number, since it is smaller than the sum of its proper divisors (450763420440).

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

213423131400 is a wasteful number, since it uses less digits than its factorization.

213423131400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384343 (or 1384334 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 213423131400 its reverse (4131324312), we get a palindrome (217554455712).

The spelling of 213423131400 in words is "two hundred thirteen billion, four hundred twenty-three million, one hundred thirty-one thousand, four hundred".