313334021 has 32 divisors (see below), whose sum is σ = 445471488. Its totient is φ = 212106240.

The previous prime is 313333963. The next prime is 313334027. The reversal of 313334021 is 120433313.

It is a cyclic number.

It is not a de Polignac number, because 313334021 - 2¹⁴ = 313317637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313333984 and 313334002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313334027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7811 + ... + 26223.

It is an arithmetic number, because the mean of its divisors is an integer number (13920984).

Almost surely, 2^313334021 is an apocalyptic number.

It is an amenable number.

313334021 is a deficient number, since it is larger than the sum of its proper divisors (132137467).

313334021 is a wasteful number, since it uses less digits than its factorization.

313334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18461.

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

The square root of 313334021 is about 17701.2434873938. The cubic root of 313334021 is about 679.2075695558.

Adding to 313334021 its reverse (120433313), we get a palindrome (433767334).

The spelling of 313334021 in words is "three hundred thirteen million, three hundred thirty-four thousand, twenty-one".