13112351881 has 2 divisors, whose sum is σ = 13112351882. Its totient is φ = 13112351880.

The previous prime is 13112351867. The next prime is 13112351939. The reversal of 13112351881 is 18815321131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10778592400 + 2333759481 = 103820^2 + 48309^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112351881 - 2¹³ = 13112343689 is a prime.

It is a super-2 number, since 2×13112351881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13112351851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556175940 + 6556175941.

It is an arithmetic number, because the mean of its divisors is an integer number (6556175941).

Almost surely, 2^13112351881 is an apocalyptic number.

It is an amenable number.

13112351881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112351881 is an equidigital number, since it uses as much as digits as its factorization.

13112351881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 34.

The spelling of 13112351881 in words is "thirteen billion, one hundred twelve million, three hundred fifty-one thousand, eight hundred eighty-one".