323131210231 has 4 divisors (see below), whose sum is σ = 324822996864. Its totient is φ = 321439423600.

The previous prime is 323131210229. The next prime is 323131210243. The reversal of 323131210231 is 132012131323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132012131323 = 79 ⋅1671039637.

It is a cyclic number.

It is not a de Polignac number, because 323131210231 - 2¹ = 323131210229 is a prime.

It is a super-2 number, since 2×323131210231² (a number of 24 digits) 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 (323131210931) 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, 845893030 + ... + 845893411.

It is an arithmetic number, because the mean of its divisors is an integer number (81205749216).

Almost surely, 2^323131210231 is an apocalyptic number.

323131210231 is a deficient number, since it is larger than the sum of its proper divisors (1691786633).

323131210231 is a wasteful number, since it uses less digits than its factorization.

323131210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691786632.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 323131210231 its reverse (132012131323), we get a palindrome (455143341554).

The spelling of 323131210231 in words is "three hundred twenty-three billion, one hundred thirty-one million, two hundred ten thousand, two hundred thirty-one".