2005315511 has 2 divisors, whose sum is σ = 2005315512. Its totient is φ = 2005315510.

The previous prime is 2005315493. The next prime is 2005315523. The reversal of 2005315511 is 1155135002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2005315511 - 2⁶ = 2005315447 is a prime.

It is a super-3 number, since 3×2005315511³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005315591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002657755 + 1002657756.

It is an arithmetic number, because the mean of its divisors is an integer number (1002657756).

Almost surely, 2^2005315511 is an apocalyptic number.

2005315511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005315511 is an equidigital number, since it uses as much as digits as its factorization.

2005315511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 2005315511 is about 44780.7493349542. The cubic root of 2005315511 is about 1261.0362498680.

The spelling of 2005315511 in words is "two billion, five million, three hundred fifteen thousand, five hundred eleven".