313561921156 has 27 divisors (see below), whose sum is σ = 603176897253. Its totient is φ = 142522546320.

The previous prime is 313561921109. The next prime is 313561921237. The reversal of 313561921156 is 651129165313.

The square root of 313561921156 is 559966.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 152748088900 + 160813832256 = 390830^2 + 401016^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12306526 + ... + 12331978.

Almost surely, 2^313561921156 is an apocalyptic number.

313561921156 is the 559966-th square number.

It is an amenable number.

313561921156 is a deficient number, since it is larger than the sum of its proper divisors (289614976097).

313561921156 is an frugal number, since it uses more digits than its factorization.

313561921156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50932 (or 25466 counting only the distinct ones).

The product of its digits is 145800, while the sum is 43.

The spelling of 313561921156 in words is "three hundred thirteen billion, five hundred sixty-one million, nine hundred twenty-one thousand, one hundred fifty-six".