312323131 has 8 divisors (see below), whose sum is σ = 321269760. Its totient is φ = 303472488.

The previous prime is 312323119. The next prime is 312323149. The reversal of 312323131 is 131323213.

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

It is a cyclic number.

It is not a de Polignac number, because 312323131 - 2²³ = 303934523 is a prime.

It is a super-2 number, since 2×312323131² = 195091476315286322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312323099 and 312323108.

It is not an unprimeable number, because it can be changed into a prime (312323191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17371 + ... + 30436.

It is an arithmetic number, because the mean of its divisors is an integer number (40158720).

Almost surely, 2^312323131 is an apocalyptic number.

312323131 is a deficient number, since it is larger than the sum of its proper divisors (8946629).

312323131 is a wasteful number, since it uses less digits than its factorization.

312323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47993.

The product of its digits is 324, while the sum is 19.

The square root of 312323131 is about 17672.6662108466. Note that the first 3 decimals coincide. The cubic root of 312323131 is about 678.4763542999.

Adding to 312323131 its reverse (131323213), we get a palindrome (443646344).

The spelling of 312323131 in words is "three hundred twelve million, three hundred twenty-three thousand, one hundred thirty-one".