313355021 has 8 divisors (see below), whose sum is σ = 363164544. Its totient is φ = 264806640.

The previous prime is 313354939. The next prime is 313355039. The reversal of 313355021 is 120553313.

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

It is not a de Polignac number, because 313355021 - 2²⁶ = 246246157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313355041) 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, 314750 + ... + 315743.

It is an arithmetic number, because the mean of its divisors is an integer number (45395568).

Almost surely, 2^313355021 is an apocalyptic number.

It is an amenable number.

313355021 is a deficient number, since it is larger than the sum of its proper divisors (49809523).

313355021 is an equidigital number, since it uses as much as digits as its factorization.

313355021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630571.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 313355021 is about 17701.8366561213. The cubic root of 313355021 is about 679.2227429696. Note that the first 3 decimals are identical.

The spelling of 313355021 in words is "three hundred thirteen million, three hundred fifty-five thousand, twenty-one".