313231322 has 8 divisors (see below), whose sum is σ = 470034900. Its totient is φ = 156553024.

The previous prime is 313231301. The next prime is 313231327. The reversal of 313231322 is 223132313.

It can be written as a sum of positive squares in 2 ways, for example, as 271227961 + 42003361 = 16469^2 + 6481^2 .

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

It is a super-2 number, since 2×313231322² = 196227722163735368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313231294 and 313231303.

It is not an unprimeable number, because it can be changed into a prime (313231327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24797 + ... + 35232.

Almost surely, 2^313231322 is an apocalyptic number.

313231322 is a deficient number, since it is larger than the sum of its proper divisors (156803578).

313231322 is a wasteful number, since it uses less digits than its factorization.

313231322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62640.

The product of its digits is 648, while the sum is 20.

The square root of 313231322 is about 17698.3423517571. The cubic root of 313231322 is about 679.1333552926.

Adding to 313231322 its reverse (223132313), we get a palindrome (536363635).

Subtracting from 313231322 its reverse (223132313), we obtain a palindrome (90099009).

The spelling of 313231322 in words is "three hundred thirteen million, two hundred thirty-one thousand, three hundred twenty-two".