313212331 has 4 divisors (see below), whose sum is σ = 315207472. Its totient is φ = 311217192.

The previous prime is 313212329. The next prime is 313212377. The reversal of 313212331 is 133212313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313212331 - 2¹ = 313212329 is a prime.

It is a super-2 number, since 2×313212331² = 196203928580907122, 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 = 313212299 and 313212308.

It is not an unprimeable number, because it can be changed into a prime (313212631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997335 + ... + 997648.

It is an arithmetic number, because the mean of its divisors is an integer number (78801868).

Almost surely, 2^313212331 is an apocalyptic number.

313212331 is a deficient number, since it is larger than the sum of its proper divisors (1995141).

313212331 is a wasteful number, since it uses less digits than its factorization.

313212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995140.

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

The square root of 313212331 is about 17697.8058244518. The cubic root of 313212331 is about 679.1196298855.

Adding to 313212331 its reverse (133212313), we get a palindrome (446424644).

The spelling of 313212331 in words is "three hundred thirteen million, two hundred twelve thousand, three hundred thirty-one".