13111011 has 8 divisors (see below), whose sum is σ = 19423760. Its totient is φ = 8740656.

The previous prime is 13111009. The next prime is 13111013. The reversal of 13111011 is 11011131.

It is an interprime number because it is at equal distance from previous prime (13111009) and next prime (13111013).

It is not a de Polignac number, because 13111011 - 2¹ = 13111009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13110984 and 13111002.

It is not an unprimeable number, because it can be changed into a prime (13111013) 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 7 ways as a sum of consecutive naturals, for example, 242770 + ... + 242823.

It is an arithmetic number, because the mean of its divisors is an integer number (2427970).

Almost surely, 2^13111011 is an apocalyptic number.

13111011 is a deficient number, since it is larger than the sum of its proper divisors (6312749).

13111011 is an equidigital number, since it uses as much as digits as its factorization.

13111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485602 (or 485596 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 13111011 is about 3620.9130064115. The cubic root of 13111011 is about 235.8008650073.

Adding to 13111011 its reverse (11011131), we get a palindrome (24122142).

It can be divided in two parts, 131 and 11011, that multiplied together give a palindrome (1442441).

The spelling of 13111011 in words is "thirteen million, one hundred eleven thousand, eleven".