40004000431 has 2 divisors, whose sum is σ = 40004000432. Its totient is φ = 40004000430.

The previous prime is 40004000429. The next prime is 40004000459. The reversal of 40004000431 is 13400040004.

40004000431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40004000431 - 2¹ = 40004000429 is a prime.

It is a super-2 number, since 2×40004000431² (a number of 22 digits) contains 22 as substring.

Together with 40004000429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40004000461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002000215 + 20002000216.

It is an arithmetic number, because the mean of its divisors is an integer number (20002000216).

Almost surely, 2^40004000431 is an apocalyptic number.

40004000431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40004000431 is an equidigital number, since it uses as much as digits as its factorization.

40004000431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 40004000431 its reverse (13400040004), we get a palindrome (53404040435).

The spelling of 40004000431 in words is "forty billion, four million, four hundred thirty-one", and thus it is an aban number.