312131326 has 8 divisors (see below), whose sum is σ = 504212184. Its totient is φ = 144060600.

The previous prime is 312131317. The next prime is 312131333. The reversal of 312131326 is 623131213.

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 = 312131297 and 312131306.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6002500 + ... + 6002551.

It is an arithmetic number, because the mean of its divisors is an integer number (63026523).

Almost surely, 2^312131326 is an apocalyptic number.

312131326 is a deficient number, since it is larger than the sum of its proper divisors (192080858).

312131326 is a wasteful number, since it uses less digits than its factorization.

312131326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12005066.

The product of its digits is 648, while the sum is 22.

The square root of 312131326 is about 17667.2387769000. The cubic root of 312131326 is about 678.3374364154.

Adding to 312131326 its reverse (623131213), we get a palindrome (935262539).

The spelling of 312131326 in words is "three hundred twelve million, one hundred thirty-one thousand, three hundred twenty-six".