323131322002231 has 4 divisors (see below), whose sum is σ = 325299988593000. Its totient is φ = 320962655411464.

The previous prime is 323131322002121. The next prime is 323131322002259. The reversal of 323131322002231 is 132200223131323.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323131322002231 is a prime.

It is a super-2 number, since 2×323131322002231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 323131322002231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323131322002331) 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, 1084333295161 + ... + 1084333295458.

It is an arithmetic number, because the mean of its divisors is an integer number (81324997148250).

Almost surely, 2^{323131322002231} is an apocalyptic number.

323131322002231 is a deficient number, since it is larger than the sum of its proper divisors (2168666590769).

323131322002231 is a wasteful number, since it uses less digits than its factorization.

323131322002231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168666590768.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 323131322002231 its reverse (132200223131323), we get a palindrome (455331545133554).

The spelling of 323131322002231 in words is "three hundred twenty-three trillion, one hundred thirty-one billion, three hundred twenty-two million, two thousand, two hundred thirty-one".