405111013 has 4 divisors (see below), whose sum is σ = 405544300. Its totient is φ = 404677728.

The previous prime is 405110999. The next prime is 405111017. The reversal of 405111013 is 310111504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22439169 + 382671844 = 4737^2 + 19562^2 .

It is a cyclic number.

It is not a de Polignac number, because 405111013 - 2¹⁷ = 404979941 is a prime.

It is a super-2 number, since 2×405111013² = 328229865707772338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405111017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215238 + ... + 217111.

It is an arithmetic number, because the mean of its divisors is an integer number (101386075).

Almost surely, 2^405111013 is an apocalyptic number.

It is an amenable number.

405111013 is a deficient number, since it is larger than the sum of its proper divisors (433287).

405111013 is an equidigital number, since it uses as much as digits as its factorization.

405111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433286.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 405111013 is about 20127.3697486780. The cubic root of 405111013 is about 739.9312165188.

Adding to 405111013 its reverse (310111504), we get a palindrome (715222517).

The spelling of 405111013 in words is "four hundred five million, one hundred eleven thousand, thirteen".