13531203541 has 2 divisors, whose sum is σ = 13531203542. Its totient is φ = 13531203540.

The previous prime is 13531203481. The next prime is 13531203551. The reversal of 13531203541 is 14530213531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13023602641 + 507600900 = 114121^2 + 22530^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531203541 - 2²³ = 13522814933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531203551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765601770 + 6765601771.

It is an arithmetic number, because the mean of its divisors is an integer number (6765601771).

Almost surely, 2^13531203541 is an apocalyptic number.

It is an amenable number.

13531203541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531203541 is an equidigital number, since it uses as much as digits as its factorization.

13531203541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 13531203541 in words is "thirteen billion, five hundred thirty-one million, two hundred three thousand, five hundred forty-one".