13530533231 has 2 divisors, whose sum is σ = 13530533232. Its totient is φ = 13530533230.

The previous prime is 13530533183. The next prime is 13530533239. The reversal of 13530533231 is 13233503531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13530533231 - 2¹⁸ = 13530271087 is a prime.

It is a super-2 number, since 2×13530533231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13530533194 and 13530533203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530533239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765266615 + 6765266616.

It is an arithmetic number, because the mean of its divisors is an integer number (6765266616).

Almost surely, 2^13530533231 is an apocalyptic number.

13530533231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530533231 is an equidigital number, since it uses as much as digits as its factorization.

13530533231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 29.

The spelling of 13530533231 in words is "thirteen billion, five hundred thirty million, five hundred thirty-three thousand, two hundred thirty-one".