213123231002 has 16 divisors (see below), whose sum is σ = 367102216800. Its totient is φ = 91775553840.

The previous prime is 213123231001. The next prime is 213123231023. The reversal of 213123231002 is 200132321312.

213123231002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213123231001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254931677 + ... + 254932512.

It is an arithmetic number, because the mean of its divisors is an integer number (22943888550).

Almost surely, 2^213123231002 is an apocalyptic number.

213123231002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213123231002 is a deficient number, since it is larger than the sum of its proper divisors (153978985798).

213123231002 is a wasteful number, since it uses less digits than its factorization.

213123231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509864221.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213123231002 its reverse (200132321312), we get a palindrome (413255552314).

The spelling of 213123231002 in words is "two hundred thirteen billion, one hundred twenty-three million, two hundred thirty-one thousand, two".