40963231181 has 2 divisors, whose sum is σ = 40963231182. Its totient is φ = 40963231180.

The previous prime is 40963231171. The next prime is 40963231187. The reversal of 40963231181 is 18113236904.

40963231181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40919221225 + 44009956 = 202285^2 + 6634^2 .

It is a cyclic number.

It is not a de Polignac number, because 40963231181 - 2³⁴ = 23783361997 is a prime.

It is a super-2 number, since 2×40963231181² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40963231187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20481615590 + 20481615591.

It is an arithmetic number, because the mean of its divisors is an integer number (20481615591).

Almost surely, 2^40963231181 is an apocalyptic number.

It is an amenable number.

40963231181 is a deficient number, since it is larger than the sum of its proper divisors (1).

40963231181 is an equidigital number, since it uses as much as digits as its factorization.

40963231181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 40963231181 in words is "forty billion, nine hundred sixty-three million, two hundred thirty-one thousand, one hundred eighty-one".