13011131 has 4 divisors (see below), whose sum is σ = 14869872. Its totient is φ = 11152392.

The previous prime is 13011121. The next prime is 13011133. The reversal of 13011131 is 13111031.

It is a happy number.

13011131 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13111031 = 107 ⋅122533.

It is a cyclic number.

It is not a de Polignac number, because 13011131 - 2¹⁸ = 12748987 is a prime.

It is a super-2 number, since 2×13011131² = 338579059798322, which contains 22 as substring.

It is a Duffinian number.

13011131 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13011133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929360 + ... + 929373.

It is an arithmetic number, because the mean of its divisors is an integer number (3717468).

Almost surely, 2^13011131 is an apocalyptic number.

13011131 is a deficient number, since it is larger than the sum of its proper divisors (1858741).

13011131 is an equidigital number, since it uses as much as digits as its factorization.

13011131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858740.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 13011131 is about 3607.0945371587. The cubic root of 13011131 is about 235.2005591311.

Adding to 13011131 its reverse (13111031), we get a palindrome (26122162).

The spelling of 13011131 in words is "thirteen million, eleven thousand, one hundred thirty-one".