13455731 has 2 divisors, whose sum is σ = 13455732. Its totient is φ = 13455730.

The previous prime is 13455727. The next prime is 13455733. The reversal of 13455731 is 13755431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13455731 - 2² = 13455727 is a prime.

It is a super-2 number, since 2×13455731² = 362113393488722, which contains 22 as substring.

Together with 13455733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13455694 and 13455703.

It is not a weakly prime, because it can be changed into another prime (13455733) 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, 6727865 + 6727866.

It is an arithmetic number, because the mean of its divisors is an integer number (6727866).

Almost surely, 2^13455731 is an apocalyptic number.

13455731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13455731 is an equidigital number, since it uses as much as digits as its factorization.

13455731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 13455731 is about 3668.2054195478. The cubic root of 13455731 is about 237.8496036850.

The spelling of 13455731 in words is "thirteen million, four hundred fifty-five thousand, seven hundred thirty-one".