40312002169 has 2 divisors, whose sum is σ = 40312002170. Its totient is φ = 40312002168.

The previous prime is 40312002113. The next prime is 40312002187. The reversal of 40312002169 is 96120021304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30632000400 + 9680001769 = 175020^2 + 98387^2 .

It is a cyclic number.

It is not a de Polignac number, because 40312002169 - 2¹³ = 40311993977 is a prime.

It is a super-2 number, since 2×40312002169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40312002109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156001084 + 20156001085.

It is an arithmetic number, because the mean of its divisors is an integer number (20156001085).

Almost surely, 2^40312002169 is an apocalyptic number.

It is an amenable number.

40312002169 is a deficient number, since it is larger than the sum of its proper divisors (1).

40312002169 is an equidigital number, since it uses as much as digits as its factorization.

40312002169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 40312002169 in words is "forty billion, three hundred twelve million, two thousand, one hundred sixty-nine".