313220253 has 4 divisors (see below), whose sum is σ = 417627008. Its totient is φ = 208813500.

The previous prime is 313220239. The next prime is 313220261. The reversal of 313220253 is 352022313.

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: 352022313 = 3 ⋅117340771.

It is a de Polignac number, because none of the positive numbers 2^k-313220253 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 (313220273) 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, 52203373 + ... + 52203378.

It is an arithmetic number, because the mean of its divisors is an integer number (104406752).

Almost surely, 2^313220253 is an apocalyptic number.

It is an amenable number.

313220253 is a deficient number, since it is larger than the sum of its proper divisors (104406755).

313220253 is a wasteful number, since it uses less digits than its factorization.

313220253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104406754.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 313220253 is about 17698.0296360923. The cubic root of 313220253 is about 679.1253554374.

Adding to 313220253 its reverse (352022313), we get a palindrome (665242566).

The spelling of 313220253 in words is "three hundred thirteen million, two hundred twenty thousand, two hundred fifty-three".