13257111 has 8 divisors (see below), whose sum is σ = 20201344. Its totient is φ = 7575480.

The previous prime is 13257107. The next prime is 13257121. The reversal of 13257111 is 11175231.

It is a happy number.

13257111 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13257111 - 2² = 13257107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 631291 = 13257111 / (1 + 3 + 2 + 5 + 7 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315625 + ... + 315666.

It is an arithmetic number, because the mean of its divisors is an integer number (2525168).

Almost surely, 2^13257111 is an apocalyptic number.

13257111 is a deficient number, since it is larger than the sum of its proper divisors (6944233).

13257111 is an equidigital number, since it uses as much as digits as its factorization.

13257111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631301.

The product of its digits is 210, while the sum is 21.

The square root of 13257111 is about 3641.0315845925. The cubic root of 13257111 is about 236.6734986676.

The spelling of 13257111 in words is "thirteen million, two hundred fifty-seven thousand, one hundred eleven".