313144231 has 4 divisors (see below), whose sum is σ = 317433952. Its totient is φ = 308854512.

The previous prime is 313144219. The next prime is 313144243. The reversal of 313144231 is 132441313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132441313 = 7333 ⋅18061.

It is an interprime number because it is at equal distance from previous prime (313144219) and next prime (313144243).

It is a cyclic number.

It is not a de Polignac number, because 313144231 - 2¹⁹ = 312619943 is a prime.

It is a super-2 number, since 2×313144231² = 196118618817162722, 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 (313144261) 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, 2144751 + ... + 2144896.

It is an arithmetic number, because the mean of its divisors is an integer number (79358488).

Almost surely, 2^313144231 is an apocalyptic number.

313144231 is a deficient number, since it is larger than the sum of its proper divisors (4289721).

313144231 is an equidigital number, since it uses as much as digits as its factorization.

313144231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289720.

The product of its digits is 864, while the sum is 22.

The square root of 313144231 is about 17695.8817525434. The cubic root of 313144231 is about 679.0704072609.

Adding to 313144231 its reverse (132441313), we get a palindrome (445585544).

The spelling of 313144231 in words is "three hundred thirteen million, one hundred forty-four thousand, two hundred thirty-one".