313221203012 has 6 divisors (see below), whose sum is σ = 548137105278. Its totient is φ = 156610601504.

The previous prime is 313221202997. The next prime is 313221203059. The reversal of 313221203012 is 210302122313.

It can be written as a sum of positive squares in only one way, i.e., 260310162436 + 52911040576 = 510206^2 + 230024^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39152650373 + ... + 39152650380.

It is an arithmetic number, because the mean of its divisors is an integer number (91356184213).

Almost surely, 2^313221203012 is an apocalyptic number.

It is an amenable number.

313221203012 is a deficient number, since it is larger than the sum of its proper divisors (234915902266).

313221203012 is a wasteful number, since it uses less digits than its factorization.

313221203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78305300757 (or 78305300755 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 313221203012 its reverse (210302122313), we get a palindrome (523523325325).

The spelling of 313221203012 in words is "three hundred thirteen billion, two hundred twenty-one million, two hundred three thousand, twelve".