40434031331 has 2 divisors, whose sum is σ = 40434031332. Its totient is φ = 40434031330.

The previous prime is 40434031307. The next prime is 40434031397. The reversal of 40434031331 is 13313043404.

It is a happy number.

40434031331 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 a de Polignac number, because none of the positive numbers 2^k-40434031331 is a prime.

It is a super-2 number, since 2×40434031331² (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 40434031331.

It is not a weakly prime, because it can be changed into another prime (40434031031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217015665 + 20217015666.

It is an arithmetic number, because the mean of its divisors is an integer number (20217015666).

Almost surely, 2^40434031331 is an apocalyptic number.

40434031331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40434031331 is an equidigital number, since it uses as much as digits as its factorization.

40434031331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 40434031331 its reverse (13313043404), we get a palindrome (53747074735).

The spelling of 40434031331 in words is "forty billion, four hundred thirty-four million, thirty-one thousand, three hundred thirty-one".