20131323001 has 2 divisors, whose sum is σ = 20131323002. Its totient is φ = 20131323000.

The previous prime is 20131322977. The next prime is 20131323059. The reversal of 20131323001 is 10032313102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11612217600 + 8519105401 = 107760^2 + 92299^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131323001 - 2¹⁷ = 20131191929 is a prime.

It is not a weakly prime, because it can be changed into another prime (20131324001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065661500 + 10065661501.

It is an arithmetic number, because the mean of its divisors is an integer number (10065661501).

Almost surely, 2^20131323001 is an apocalyptic number.

It is an amenable number.

20131323001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131323001 is an equidigital number, since it uses as much as digits as its factorization.

20131323001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20131323001 its reverse (10032313102), we get a palindrome (30163636103).

The spelling of 20131323001 in words is "twenty billion, one hundred thirty-one million, three hundred twenty-three thousand, one".