11020031131 has 2 divisors, whose sum is σ = 11020031132. Its totient is φ = 11020031130.

The previous prime is 11020031083. The next prime is 11020031149. The reversal of 11020031131 is 13113002011.

It is a strong prime.

It is an emirp because it is prime and its reverse (13113002011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11020031131 - 2²⁷ = 10885813403 is a prime.

It is a super-2 number, since 2×11020031131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11020031161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510015565 + 5510015566.

It is an arithmetic number, because the mean of its divisors is an integer number (5510015566).

Almost surely, 2^11020031131 is an apocalyptic number.

11020031131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020031131 is an equidigital number, since it uses as much as digits as its factorization.

11020031131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11020031131 its reverse (13113002011), we get a palindrome (24133033142).

The spelling of 11020031131 in words is "eleven billion, twenty million, thirty-one thousand, one hundred thirty-one".