313260221 has 4 divisors (see below), whose sum is σ = 315334944. Its totient is φ = 311185500.

The previous prime is 313260209. The next prime is 313260251. The reversal of 313260221 is 122062313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122062313 = 103 ⋅1185071.

It is a cyclic number.

It is not a de Polignac number, because 313260221 - 2¹⁰ = 313259197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313260193 and 313260202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313260251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037135 + ... + 1037436.

It is an arithmetic number, because the mean of its divisors is an integer number (78833736).

Almost surely, 2^313260221 is an apocalyptic number.

It is an amenable number.

313260221 is a deficient number, since it is larger than the sum of its proper divisors (2074723).

313260221 is a wasteful number, since it uses less digits than its factorization.

313260221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074722.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 313260221 is about 17699.1587653199. The cubic root of 313260221 is about 679.1542404659.

The spelling of 313260221 in words is "three hundred thirteen million, two hundred sixty thousand, two hundred twenty-one".