40813511 has 2 divisors, whose sum is σ = 40813512. Its totient is φ = 40813510.

The previous prime is 40813499. The next prime is 40813537. The reversal of 40813511 is 11531804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40813511 - 2¹⁰ = 40812487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40813541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20406755 + 20406756.

It is an arithmetic number, because the mean of its divisors is an integer number (20406756).

Almost surely, 2^40813511 is an apocalyptic number.

40813511 is a deficient number, since it is larger than the sum of its proper divisors (1).

40813511 is an equidigital number, since it uses as much as digits as its factorization.

40813511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 40813511 is about 6388.5452960748. The cubic root of 40813511 is about 344.2981207564.

The spelling of 40813511 in words is "forty million, eight hundred thirteen thousand, five hundred eleven".