23131303303321 has 4 divisors (see below), whose sum is σ = 23131556160052. Its totient is φ = 23131050446592.

The previous prime is 23131303303291. The next prime is 23131303303379. The reversal of 23131303303321 is 12330330313132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13223986790400 + 9907316512921 = 3636480^2 + 3147589^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131303303321 - 2⁷ = 23131303303193 is a prime.

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 23131303303321.

It is not an unprimeable number, because it can be changed into a prime (23131303303421) 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, 126291096 + ... + 126474121.

It is an arithmetic number, because the mean of its divisors is an integer number (5782889040013).

Almost surely, 2^{23131303303321} is an apocalyptic number.

It is an amenable number.

23131303303321 is a deficient number, since it is larger than the sum of its proper divisors (252856731).

23131303303321 is an equidigital number, since it uses as much as digits as its factorization.

23131303303321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252856730.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 23131303303321 its reverse (12330330313132), we get a palindrome (35461633616453).

The spelling of 23131303303321 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred three million, three hundred three thousand, three hundred twenty-one".