213123203130 has 64 divisors (see below), whose sum is σ = 531792864000. Its totient is φ = 54597312000.

The previous prime is 213123203107. The next prime is 213123203141. The reversal of 213123203130 is 31302321312.

It is a junction number, because it is equal to n+sod(n) for n = 213123203097 and 213123203106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442371 + ... + 788630.

It is an arithmetic number, because the mean of its divisors is an integer number (8309263500).

Almost surely, 2^213123203130 is an apocalyptic number.

213123203130 is an abundant number, since it is smaller than the sum of its proper divisors (318669660870).

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

213123203130 is a wasteful number, since it uses less digits than its factorization.

213123203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231239.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 213123203130 its reverse (31302321312), we get a palindrome (244425524442).

The spelling of 213123203130 in words is "two hundred thirteen billion, one hundred twenty-three million, two hundred three thousand, one hundred thirty".