40331043427 has 2 divisors, whose sum is σ = 40331043428. Its totient is φ = 40331043426.

The previous prime is 40331043407. The next prime is 40331043433. The reversal of 40331043427 is 72434013304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40331043427 is a prime.

It is a super-3 number, since 3×40331043427³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40331043407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20165521713 + 20165521714.

It is an arithmetic number, because the mean of its divisors is an integer number (20165521714).

Almost surely, 2^40331043427 is an apocalyptic number.

40331043427 is a deficient number, since it is larger than the sum of its proper divisors (1).

40331043427 is an equidigital number, since it uses as much as digits as its factorization.

40331043427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

The spelling of 40331043427 in words is "forty billion, three hundred thirty-one million, forty-three thousand, four hundred twenty-seven".