13385531 has 2 divisors, whose sum is σ = 13385532. Its totient is φ = 13385530.

The previous prime is 13385431. The next prime is 13385543. The reversal of 13385531 is 13558331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13385531 - 2²² = 9191227 is a prime.

It is a super-2 number, since 2×13385531² = 358344880303922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13385494 and 13385503.

It is not a weakly prime, because it can be changed into another prime (13385431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6692765 + 6692766.

It is an arithmetic number, because the mean of its divisors is an integer number (6692766).

Almost surely, 2^13385531 is an apocalyptic number.

13385531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13385531 is an equidigital number, since it uses as much as digits as its factorization.

13385531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 13385531 is about 3658.6241949673. The cubic root of 13385531 is about 237.4352532646.

The spelling of 13385531 in words is "thirteen million, three hundred eighty-five thousand, five hundred thirty-one".