40001431369 has 2 divisors, whose sum is σ = 40001431370. Its totient is φ = 40001431368.

The previous prime is 40001431319. The next prime is 40001431391. The reversal of 40001431369 is 96313410004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29389959225 + 10611472144 = 171435^2 + 103012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40001431369 is a prime.

It is a super-2 number, since 2×40001431369² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40001431369.

It is not a weakly prime, because it can be changed into another prime (40001431319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000715684 + 20000715685.

It is an arithmetic number, because the mean of its divisors is an integer number (20000715685).

Almost surely, 2^40001431369 is an apocalyptic number.

It is an amenable number.

40001431369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40001431369 is an equidigital number, since it uses as much as digits as its factorization.

40001431369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 40001431369 in words is "forty billion, one million, four hundred thirty-one thousand, three hundred sixty-nine".