13235731 has 2 divisors, whose sum is σ = 13235732. Its totient is φ = 13235730.

The previous prime is 13235713. The next prime is 13235737. The reversal of 13235731 is 13753231.

Together with previous prime (13235713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13235731 - 2⁵ = 13235699 is a prime.

It is a super-2 number, since 2×13235731² = 350369150208722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13235696 and 13235705.

It is not a weakly prime, because it can be changed into another prime (13235737) 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, 6617865 + 6617866.

It is an arithmetic number, because the mean of its divisors is an integer number (6617866).

Almost surely, 2^13235731 is an apocalyptic number.

13235731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13235731 is an equidigital number, since it uses as much as digits as its factorization.

13235731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 25.

The square root of 13235731 is about 3638.0944187857. The cubic root of 13235731 is about 236.5462008976.

Adding to 13235731 its reverse (13753231), we get a palindrome (26988962).

The spelling of 13235731 in words is "thirteen million, two hundred thirty-five thousand, seven hundred thirty-one".