13028531 has 2 divisors, whose sum is σ = 13028532. Its totient is φ = 13028530.

The previous prime is 13028503. The next prime is 13028539. The reversal of 13028531 is 13582031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13028531 - 2⁶ = 13028467 is a prime.

It is a super-2 number, since 2×13028531² = 339485240035922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13028497 and 13028506.

It is not a weakly prime, because it can be changed into another prime (13028539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6514265 + 6514266.

It is an arithmetic number, because the mean of its divisors is an integer number (6514266).

Almost surely, 2^13028531 is an apocalyptic number.

13028531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13028531 is an equidigital number, since it uses as much as digits as its factorization.

13028531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 13028531 is about 3609.5056448217. The cubic root of 13028531 is about 235.3053582902.

The spelling of 13028531 in words is "thirteen million, twenty-eight thousand, five hundred thirty-one".