313663878021 has 16 divisors (see below), whose sum is σ = 474093851840. Its totient is φ = 182864770560.

The previous prime is 313663877963. The next prime is 313663878043. The reversal of 313663878021 is 120878366313.

It is not a de Polignac number, because 313663878021 - 2⁹ = 313663877509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313663878821) 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 15 ways as a sum of consecutive naturals, for example, 211648300 + ... + 211649781.

It is an arithmetic number, because the mean of its divisors is an integer number (29630865740).

Almost surely, 2^313663878021 is an apocalyptic number.

It is an amenable number.

313663878021 is a deficient number, since it is larger than the sum of its proper divisors (160429973819).

313663878021 is a wasteful number, since it uses less digits than its factorization.

313663878021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423298116.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 313663878021 in words is "three hundred thirteen billion, six hundred sixty-three million, eight hundred seventy-eight thousand, twenty-one".