213010000003123 has 4 divisors (see below), whose sum is σ = 213075967798240. Its totient is φ = 212944032208008.

The previous prime is 213010000003061. The next prime is 213010000003139. The reversal of 213010000003123 is 321300000010312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213010000003123 - 2³⁷ = 212872561049651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213010000003097 and 213010000003106.

It is not an unprimeable number, because it can be changed into a prime (213010000003183) 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 3 ways as a sum of consecutive naturals, for example, 32983892715 + ... + 32983899172.

It is an arithmetic number, because the mean of its divisors is an integer number (53268991949560).

Almost surely, 2^{213010000003123} is an apocalyptic number.

213010000003123 is a deficient number, since it is larger than the sum of its proper divisors (65967795117).

213010000003123 is an equidigital number, since it uses as much as digits as its factorization.

213010000003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65967795116.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 213010000003123 its reverse (321300000010312), we get a palindrome (534310000013435).

The spelling of 213010000003123 in words is "two hundred thirteen trillion, ten billion, three thousand, one hundred twenty-three".