13423421237 has 2 divisors, whose sum is σ = 13423421238. Its totient is φ = 13423421236.

The previous prime is 13423421201. The next prime is 13423421269. The reversal of 13423421237 is 73212432431.

It is an a-pointer prime, because the next prime (13423421269) can be obtained adding 13423421237 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12256925521 + 1166495716 = 110711^2 + 34154^2 .

It is a cyclic number.

It is not a de Polignac number, because 13423421237 - 2¹⁴ = 13423404853 is a prime.

It is a super-3 number, since 3×13423421237³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13423421287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711710618 + 6711710619.

It is an arithmetic number, because the mean of its divisors is an integer number (6711710619).

Almost surely, 2^13423421237 is an apocalyptic number.

It is an amenable number.

13423421237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13423421237 is an equidigital number, since it uses as much as digits as its factorization.

13423421237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

Adding to 13423421237 its reverse (73212432431), we get a palindrome (86635853668).

The spelling of 13423421237 in words is "thirteen billion, four hundred twenty-three million, four hundred twenty-one thousand, two hundred thirty-seven".