313021222 has 8 divisors (see below), whose sum is σ = 479522016. Its totient is φ = 153180552.

The previous prime is 313021213. The next prime is 313021279. The reversal of 313021222 is 222120313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 313021196 and 313021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664913 + ... + 1665100.

It is an arithmetic number, because the mean of its divisors is an integer number (59940252).

Almost surely, 2^313021222 is an apocalyptic number.

313021222 is a deficient number, since it is larger than the sum of its proper divisors (166500794).

313021222 is a wasteful number, since it uses less digits than its factorization.

313021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330062.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 313021222 is about 17692.4057719689. The cubic root of 313021222 is about 678.9814783654.

Adding to 313021222 its reverse (222120313), we get a palindrome (535141535).

Subtracting from 313021222 its reverse (222120313), we obtain a palindrome (90900909).

The spelling of 313021222 in words is "three hundred thirteen million, twenty-one thousand, two hundred twenty-two".