40818311 has 2 divisors, whose sum is σ = 40818312. Its totient is φ = 40818310.

The previous prime is 40818287. The next prime is 40818313. The reversal of 40818311 is 11381804.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40818311 is a prime.

It is a super-2 number, since 2×40818311² = 3332269025785442, which contains 22 as substring.

Together with 40818313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40818313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20409155 + 20409156.

It is an arithmetic number, because the mean of its divisors is an integer number (20409156).

Almost surely, 2^40818311 is an apocalyptic number.

40818311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40818311 is an equidigital number, since it uses as much as digits as its factorization.

40818311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 40818311 is about 6388.9209574074. The cubic root of 40818311 is about 344.3116176447.

The spelling of 40818311 in words is "forty million, eight hundred eighteen thousand, three hundred eleven".