213201310123 has 2 divisors, whose sum is σ = 213201310124. Its totient is φ = 213201310122.

The previous prime is 213201310103. The next prime is 213201310151. The reversal of 213201310123 is 321013102312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213201310123 - 2³³ = 204611375531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213201310123.

It is not a weakly prime, because it can be changed into another prime (213201310103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106600655061 + 106600655062.

It is an arithmetic number, because the mean of its divisors is an integer number (106600655062).

Almost surely, 2^213201310123 is an apocalyptic number.

213201310123 is a deficient number, since it is larger than the sum of its proper divisors (1).

213201310123 is an equidigital number, since it uses as much as digits as its factorization.

213201310123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213201310123 its reverse (321013102312), we get a palindrome (534214412435).

The spelling of 213201310123 in words is "two hundred thirteen billion, two hundred one million, three hundred ten thousand, one hundred twenty-three".