13531202123 has 2 divisors, whose sum is σ = 13531202124. Its totient is φ = 13531202122.

The previous prime is 13531202057. The next prime is 13531202129. The reversal of 13531202123 is 32120213531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13531202123 - 2¹² = 13531198027 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531202129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765601061 + 6765601062.

It is an arithmetic number, because the mean of its divisors is an integer number (6765601062).

Almost surely, 2^13531202123 is an apocalyptic number.

13531202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531202123 is an equidigital number, since it uses as much as digits as its factorization.

13531202123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 13531202123 its reverse (32120213531), we get a palindrome (45651415654).

The spelling of 13531202123 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, one hundred twenty-three".