1131256037 has 2 divisors, whose sum is σ = 1131256038. Its totient is φ = 1131256036.

The previous prime is 1131255971. The next prime is 1131256043. The reversal of 1131256037 is 7306521311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1119973156 + 11282881 = 33466^2 + 3359^2 .

It is an emirp because it is prime and its reverse (7306521311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131256037 - 2²⁶ = 1064147173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131256057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565628018 + 565628019.

It is an arithmetic number, because the mean of its divisors is an integer number (565628019).

Almost surely, 2^1131256037 is an apocalyptic number.

It is an amenable number.

1131256037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131256037 is an equidigital number, since it uses as much as digits as its factorization.

1131256037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1131256037 is about 33634.1498628998. The cubic root of 1131256037 is about 1041.9662128638.

Adding to 1131256037 its reverse (7306521311), we get a palindrome (8437777348).

The spelling of 1131256037 in words is "one billion, one hundred thirty-one million, two hundred fifty-six thousand, thirty-seven".