13113491 has 2 divisors, whose sum is σ = 13113492. Its totient is φ = 13113490.

The previous prime is 13113467. The next prime is 13113509. The reversal of 13113491 is 19431131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13113491 - 2¹⁸ = 12851347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13113431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556745 + 6556746.

It is an arithmetic number, because the mean of its divisors is an integer number (6556746).

Almost surely, 2^13113491 is an apocalyptic number.

13113491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13113491 is an equidigital number, since it uses as much as digits as its factorization.

13113491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 23.

The square root of 13113491 is about 3621.2554452841. The cubic root of 13113491 is about 235.8157316279.

The spelling of 13113491 in words is "thirteen million, one hundred thirteen thousand, four hundred ninety-one".