40505031311 has 2 divisors, whose sum is σ = 40505031312. Its totient is φ = 40505031310.

The previous prime is 40505031271. The next prime is 40505031323. The reversal of 40505031311 is 11313050504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40505031311 - 2¹⁰ = 40505030287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40505031361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252515655 + 20252515656.

It is an arithmetic number, because the mean of its divisors is an integer number (20252515656).

Almost surely, 2^40505031311 is an apocalyptic number.

40505031311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505031311 is an equidigital number, since it uses as much as digits as its factorization.

40505031311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 40505031311 its reverse (11313050504), we get a palindrome (51818081815).

The spelling of 40505031311 in words is "forty billion, five hundred five million, thirty-one thousand, three hundred eleven".