405311313 has 16 divisors (see below), whose sum is σ = 615177216. Its totient is φ = 234962640.

The previous prime is 405311303. The next prime is 405311321. The reversal of 405311313 is 313113504.

It is not a de Polignac number, because 405311313 - 2⁸ = 405311057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405311313.

It is not an unprimeable number, because it can be changed into a prime (405311303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266245 + ... + 267762.

It is an arithmetic number, because the mean of its divisors is an integer number (38448576).

Almost surely, 2^405311313 is an apocalyptic number.

It is an amenable number.

405311313 is a deficient number, since it is larger than the sum of its proper divisors (209865903).

405311313 is a wasteful number, since it uses less digits than its factorization.

405311313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534044.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 405311313 is about 20132.3449453858. The cubic root of 405311313 is about 740.0531450753.

Adding to 405311313 its reverse (313113504), we get a palindrome (718424817).

The spelling of 405311313 in words is "four hundred five million, three hundred eleven thousand, three hundred thirteen".