313450221 has 16 divisors (see below), whose sum is σ = 477888128. Its totient is φ = 179020800.

The previous prime is 313450219. The next prime is 313450229. The reversal of 313450221 is 122054313.

It is not a de Polignac number, because 313450221 - 2¹ = 313450219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313450229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68361 + ... + 72801.

It is an arithmetic number, because the mean of its divisors is an integer number (29868008).

Almost surely, 2^313450221 is an apocalyptic number.

It is an amenable number.

313450221 is a deficient number, since it is larger than the sum of its proper divisors (164437907).

313450221 is a wasteful number, since it uses less digits than its factorization.

313450221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 313450221 is about 17704.5254384296. The cubic root of 313450221 is about 679.2915206112.

The spelling of 313450221 in words is "three hundred thirteen million, four hundred fifty thousand, two hundred twenty-one".