13111403131 has 4 divisors (see below), whose sum is σ = 13801477000. Its totient is φ = 12421329264.

The previous prime is 13111403057. The next prime is 13111403141. The reversal of 13111403131 is 13130411131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13111403131 is a prime.

It is a super-2 number, since 2×13111403131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 690073849 = 13111403131 / (1 + 3 + 1 + 1 + 1 + 4 + 0 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111403099 and 13111403108.

It is not an unprimeable number, because it can be changed into a prime (13111403141) 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, 345036906 + ... + 345036943.

It is an arithmetic number, because the mean of its divisors is an integer number (3450369250).

Almost surely, 2^13111403131 is an apocalyptic number.

13111403131 is a deficient number, since it is larger than the sum of its proper divisors (690073869).

13111403131 is an equidigital number, since it uses as much as digits as its factorization.

13111403131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690073868.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 13111403131 its reverse (13130411131), we get a palindrome (26241814262).

The spelling of 13111403131 in words is "thirteen billion, one hundred eleven million, four hundred three thousand, one hundred thirty-one".