305313161143405 has 4 divisors (see below), whose sum is σ = 366375793372092. Its totient is φ = 244250528914720.

The previous prime is 305313161143387. The next prime is 305313161143421. The reversal of 305313161143405 is 504341161313503.

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 162678724266249 + 142634436877156 = 12754557^2 + 11942966^2 .

It is a de Polignac number, because none of the positive numbers 2^k-305313161143405 is a prime.

It is a super-2 number, since 2×305313161143405² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30531316114336 + ... + 30531316114345.

It is an arithmetic number, because the mean of its divisors is an integer number (91593948343023).

Almost surely, 2^{305313161143405} is an apocalyptic number.

It is an amenable number.

305313161143405 is a deficient number, since it is larger than the sum of its proper divisors (61062632228687).

305313161143405 is an equidigital number, since it uses as much as digits as its factorization.

305313161143405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61062632228686.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 305313161143405 in words is "three hundred five trillion, three hundred thirteen billion, one hundred sixty-one million, one hundred forty-three thousand, four hundred five".