213001303123 has 16 divisors (see below), whose sum is σ = 257802022080. Its totient is φ = 171797953536.

The previous prime is 213001303079. The next prime is 213001303127. The reversal of 213001303123 is 321303100312.

It is a cyclic number.

It is not a de Polignac number, because 213001303123 - 2⁹ = 213001302611 is a prime.

It is a super-2 number, since 2×213001303123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213001303123.

It is not an unprimeable number, because it can be changed into a prime (213001303127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411823 + ... + 771751.

It is an arithmetic number, because the mean of its divisors is an integer number (16112626380).

Almost surely, 2^213001303123 is an apocalyptic number.

213001303123 is a deficient number, since it is larger than the sum of its proper divisors (44800718957).

213001303123 is a wasteful number, since it uses less digits than its factorization.

213001303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364926.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 213001303123 its reverse (321303100312), we get a palindrome (534304403435).

The spelling of 213001303123 in words is "two hundred thirteen billion, one million, three hundred three thousand, one hundred twenty-three".