11731136437 has 2 divisors, whose sum is σ = 11731136438. Its totient is φ = 11731136436.

The previous prime is 11731136429. The next prime is 11731136449. The reversal of 11731136437 is 73463113711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11044748836 + 686387601 = 105094^2 + 26199^2 .

It is a cyclic number.

It is not a de Polignac number, because 11731136437 - 2³ = 11731136429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11731136396 and 11731136405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11731136477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5865568218 + 5865568219.

It is an arithmetic number, because the mean of its divisors is an integer number (5865568219).

Almost surely, 2^11731136437 is an apocalyptic number.

It is an amenable number.

11731136437 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731136437 is an equidigital number, since it uses as much as digits as its factorization.

11731136437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The spelling of 11731136437 in words is "eleven billion, seven hundred thirty-one million, one hundred thirty-six thousand, four hundred thirty-seven".