40120431230311 has 2 divisors, whose sum is σ = 40120431230312. Its totient is φ = 40120431230310.

The previous prime is 40120431230227. The next prime is 40120431230461. The reversal of 40120431230311 is 11303213402104.

40120431230311 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 40120431230311 - 2¹⁵ = 40120431197543 is a prime.

It is a super-2 number, since 2×40120431230311² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40120431230111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060215615155 + 20060215615156.

It is an arithmetic number, because the mean of its divisors is an integer number (20060215615156).

Almost surely, 2^{40120431230311} is an apocalyptic number.

40120431230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40120431230311 is an equidigital number, since it uses as much as digits as its factorization.

40120431230311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 40120431230311 its reverse (11303213402104), we get a palindrome (51423644632415).

The spelling of 40120431230311 in words is "forty trillion, one hundred twenty billion, four hundred thirty-one million, two hundred thirty thousand, three hundred eleven".