40243312229 has 2 divisors, whose sum is σ = 40243312230. Its totient is φ = 40243312228.

The previous prime is 40243312211. The next prime is 40243312247. The reversal of 40243312229 is 92221334204.

40243312229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (40243312211) and next prime (40243312247).

It can be written as a sum of positive squares in only one way, i.e., 39900062500 + 343249729 = 199750^2 + 18527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40243312229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40243312195 and 40243312204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40243312279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121656114 + 20121656115.

It is an arithmetic number, because the mean of its divisors is an integer number (20121656115).

Almost surely, 2^40243312229 is an apocalyptic number.

It is an amenable number.

40243312229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243312229 is an equidigital number, since it uses as much as digits as its factorization.

40243312229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 40243312229 in words is "forty billion, two hundred forty-three million, three hundred twelve thousand, two hundred twenty-nine".