13055431237 has 2 divisors, whose sum is σ = 13055431238. Its totient is φ = 13055431236.

The previous prime is 13055431201. The next prime is 13055431289. The reversal of 13055431237 is 73213455031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11589383716 + 1466047521 = 107654^2 + 38289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13055431237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13055432237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6527715618 + 6527715619.

It is an arithmetic number, because the mean of its divisors is an integer number (6527715619).

Almost surely, 2^13055431237 is an apocalyptic number.

It is an amenable number.

13055431237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13055431237 is an equidigital number, since it uses as much as digits as its factorization.

13055431237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

Adding to 13055431237 its reverse (73213455031), we get a palindrome (86268886268).

The spelling of 13055431237 in words is "thirteen billion, fifty-five million, four hundred thirty-one thousand, two hundred thirty-seven".