305302312061 has 4 divisors (see below), whose sum is σ = 323261271612. Its totient is φ = 287343352512.

The previous prime is 305302312039. The next prime is 305302312121. The reversal of 305302312061 is 160213203503.

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 170709448900 + 134592863161 = 413170^2 + 366869^2 .

It is a cyclic number.

It is not a de Polignac number, because 305302312061 - 2¹⁴ = 305302295677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 305302312061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305307312061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8979479750 + ... + 8979479783.

It is an arithmetic number, because the mean of its divisors is an integer number (80815317903).

Almost surely, 2^305302312061 is an apocalyptic number.

It is an amenable number.

305302312061 is a deficient number, since it is larger than the sum of its proper divisors (17958959551).

305302312061 is a wasteful number, since it uses less digits than its factorization.

305302312061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17958959550.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 305302312061 its reverse (160213203503), we get a palindrome (465515515564).

The spelling of 305302312061 in words is "three hundred five billion, three hundred two million, three hundred twelve thousand, sixty-one".