311304921 has 8 divisors (see below), whose sum is σ = 415344384. Its totient is φ = 207401040.

The previous prime is 311304887. The next prime is 311304941. The reversal of 311304921 is 129403113.

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

It is not a de Polignac number, because 311304921 - 2⁶ = 311304857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311304891 and 311304900.

It is not an unprimeable number, because it can be changed into a prime (311304941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28410 + ... + 37811.

It is an arithmetic number, because the mean of its divisors is an integer number (51918048).

Almost surely, 2^311304921 is an apocalyptic number.

It is an amenable number.

311304921 is a deficient number, since it is larger than the sum of its proper divisors (104039463).

311304921 is a wasteful number, since it uses less digits than its factorization.

311304921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67791.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 311304921 is about 17643.8352123341. The cubic root of 311304921 is about 677.7382474770.

The spelling of 311304921 in words is "three hundred eleven million, three hundred four thousand, nine hundred twenty-one".