313322231 has 4 divisors (see below), whose sum is σ = 315318072. Its totient is φ = 311326392.

The previous prime is 313322197. The next prime is 313322249. The reversal of 313322231 is 132223313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132223313 = 751 ⋅176063.

It is a cyclic number.

It is not a de Polignac number, because 313322231 - 2¹⁴ = 313305847 is a prime.

It is a super-2 number, since 2×313322231² = 196341640877634722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313322281) 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, 997685 + ... + 997998.

It is an arithmetic number, because the mean of its divisors is an integer number (78829518).

Almost surely, 2^313322231 is an apocalyptic number.

313322231 is a deficient number, since it is larger than the sum of its proper divisors (1995841).

313322231 is a wasteful number, since it uses less digits than its factorization.

313322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995840.

The product of its digits is 648, while the sum is 20.

The square root of 313322231 is about 17700.9104568098. The cubic root of 313322231 is about 679.1990504705.

Adding to 313322231 its reverse (132223313), we get a palindrome (445545544).

The spelling of 313322231 in words is "three hundred thirteen million, three hundred twenty-two thousand, two hundred thirty-one".