213123031104 has 28 divisors (see below), whose sum is σ = 563888020304. Its totient is φ = 71041010304.

The previous prime is 213123031057. The next prime is 213123031127. The reversal of 213123031104 is 401130321312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555007702 + ... + 555008085.

It is an arithmetic number, because the mean of its divisors is an integer number (20138857868).

Almost surely, 2^213123031104 is an apocalyptic number.

213123031104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213123031104 is an abundant number, since it is smaller than the sum of its proper divisors (350764989200).

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

213123031104 is a wasteful number, since it uses less digits than its factorization.

213123031104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110015802 (or 1110015792 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213123031104 its reverse (401130321312), we get a palindrome (614253352416).

The spelling of 213123031104 in words is "two hundred thirteen billion, one hundred twenty-three million, thirty-one thousand, one hundred four".