13531123351 has 2 divisors, whose sum is σ = 13531123352. Its totient is φ = 13531123350.

The previous prime is 13531123339. The next prime is 13531123357. The reversal of 13531123351 is 15332113531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531123351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531123357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765561675 + 6765561676.

It is an arithmetic number, because the mean of its divisors is an integer number (6765561676).

Almost surely, 2^13531123351 is an apocalyptic number.

13531123351 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531123351 is an equidigital number, since it uses as much as digits as its factorization.

13531123351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 28.

Adding to 13531123351 its reverse (15332113531), we get a palindrome (28863236882).

The spelling of 13531123351 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-three thousand, three hundred fifty-one".