306321420238877 has 4 divisors (see below), whose sum is σ = 306607969744380. Its totient is φ = 306034870733376.

The previous prime is 306321420238843. The next prime is 306321420238903. The reversal of 306321420238877 is 778832024123603.

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 249919232439556 + 56402187799321 = 15808834^2 + 7510139^2 .

It is a cyclic number.

It is not a de Polignac number, because 306321420238877 - 2³⁴ = 306304240369693 is a prime.

It is a super-2 number, since 2×306321420238877² (a number of 30 digits) 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 (306321420228877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143274751148 + ... + 143274753285.

It is an arithmetic number, because the mean of its divisors is an integer number (76651992436095).

Almost surely, 2^{306321420238877} is an apocalyptic number.

It is an amenable number.

306321420238877 is a deficient number, since it is larger than the sum of its proper divisors (286549505503).

306321420238877 is a wasteful number, since it uses less digits than its factorization.

306321420238877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286549505502.

The product of its (nonzero) digits is 16257024, while the sum is 56.

The spelling of 306321420238877 in words is "three hundred six trillion, three hundred twenty-one billion, four hundred twenty million, two hundred thirty-eight thousand, eight hundred seventy-seven".