13520523403 has 2 divisors, whose sum is σ = 13520523404. Its totient is φ = 13520523402.

The previous prime is 13520523361. The next prime is 13520523413. The reversal of 13520523403 is 30432502531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13520523403 is a prime.

It is not a weakly prime, because it can be changed into another prime (13520523413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760261701 + 6760261702.

It is an arithmetic number, because the mean of its divisors is an integer number (6760261702).

Almost surely, 2^13520523403 is an apocalyptic number.

13520523403 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520523403 is an equidigital number, since it uses as much as digits as its factorization.

13520523403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 13520523403 in words is "thirteen billion, five hundred twenty million, five hundred twenty-three thousand, four hundred three".