213003303123 has 32 divisors (see below), whose sum is σ = 316493352000. Its totient is φ = 126520644096.

The previous prime is 213003303119. The next prime is 213003303137. The reversal of 213003303123 is 321303300312.

It is not a de Polignac number, because 213003303123 - 2² = 213003303119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213003303123.

It is not an unprimeable number, because it can be changed into a prime (213003303113) 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 31 ways as a sum of consecutive naturals, for example, 3950953 + ... + 4004501.

It is an arithmetic number, because the mean of its divisors is an integer number (9890417250).

Almost surely, 2^213003303123 is an apocalyptic number.

213003303123 is a deficient number, since it is larger than the sum of its proper divisors (103490048877).

213003303123 is a wasteful number, since it uses less digits than its factorization.

213003303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57111.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 213003303123 its reverse (321303300312), we get a palindrome (534306603435).

The spelling of 213003303123 in words is "two hundred thirteen billion, three million, three hundred three thousand, one hundred twenty-three".