313421 has 4 divisors (see below), whose sum is σ = 327072. Its totient is φ = 299772.

The previous prime is 313409. The next prime is 313471. The reversal of 313421 is 124313.

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.

It is a cyclic number.

It is not a de Polignac number, because 313421 - 2¹⁰ = 312397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313396 and 313405.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313421.

It is not an unprimeable number, because it can be changed into a prime (313471) 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, 6791 + ... + 6836.

It is an arithmetic number, because the mean of its divisors is an integer number (81768).

2³¹³⁴²¹ is an apocalyptic number.

It is an amenable number.

313421 is a deficient number, since it is larger than the sum of its proper divisors (13651).

313421 is a wasteful number, since it uses less digits than its factorization.

313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650.

The product of its digits is 72, while the sum is 14.

The square root of 313421 is about 559.8401557588. The cubic root of 313421 is about 67.9270411258.

Adding to 313421 its reverse (124313), we get a palindrome (437734).

The spelling of 313421 in words is "three hundred thirteen thousand, four hundred twenty-one".