1111311137 has 2 divisors, whose sum is σ = 1111311138. Its totient is φ = 1111311136.

The previous prime is 1111311133. The next prime is 1111311143. The reversal of 1111311137 is 7311131111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680375056 + 430936081 = 26084^2 + 20759^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111311137 - 2² = 1111311133 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111311133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555655568 + 555655569.

It is an arithmetic number, because the mean of its divisors is an integer number (555655569).

Almost surely, 2^1111311137 is an apocalyptic number.

It is an amenable number.

1111311137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111311137 is an equidigital number, since it uses as much as digits as its factorization.

1111311137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63, while the sum is 20.

The square root of 1111311137 is about 33336.3335866439. Note that the first 3 decimals coincide. The cubic root of 1111311137 is about 1035.8063176164.

Adding to 1111311137 its reverse (7311131111), we get a palindrome (8422442248).

The spelling of 1111311137 in words is "one billion, one hundred eleven million, three hundred eleven thousand, one hundred thirty-seven".