13113251 has 4 divisors (see below), whose sum is σ = 13125000. Its totient is φ = 13101504.

The previous prime is 13113241. The next prime is 13113257. The reversal of 13113251 is 15231131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15231131 = 41 ⋅371491.

It is a cyclic number.

It is not a de Polignac number, because 13113251 - 2¹⁸ = 12851107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13113257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4001 + ... + 6498.

It is an arithmetic number, because the mean of its divisors is an integer number (3281250).

Almost surely, 2^13113251 is an apocalyptic number.

13113251 is a deficient number, since it is larger than the sum of its proper divisors (11749).

13113251 is a wasteful number, since it uses less digits than its factorization.

13113251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11748.

The product of its digits is 90, while the sum is 17.

The square root of 13113251 is about 3621.2223074537. Note that the first 3 decimals coincide. The cubic root of 13113251 is about 235.8142930046.

Adding to 13113251 its reverse (15231131), we get a palindrome (28344382).

The spelling of 13113251 in words is "thirteen million, one hundred thirteen thousand, two hundred fifty-one".