13201231181 has 2 divisors, whose sum is σ = 13201231182. Its totient is φ = 13201231180.

The previous prime is 13201231163. The next prime is 13201231189. The reversal of 13201231181 is 18113210231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11736255556 + 1464975625 = 108334^2 + 38275^2 .

It is a cyclic number.

It is not a de Polignac number, because 13201231181 - 2⁶ = 13201231117 is a prime.

It is a super-2 number, since 2×13201231181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13201231189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600615590 + 6600615591.

It is an arithmetic number, because the mean of its divisors is an integer number (6600615591).

Almost surely, 2^13201231181 is an apocalyptic number.

It is an amenable number.

13201231181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13201231181 is an equidigital number, since it uses as much as digits as its factorization.

13201231181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 13201231181 in words is "thirteen billion, two hundred one million, two hundred thirty-one thousand, one hundred eighty-one".