20402323001 has 2 divisors, whose sum is σ = 20402323002. Its totient is φ = 20402323000.

The previous prime is 20402322943. The next prime is 20402323037. The reversal of 20402323001 is 10032320402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18482130601 + 1920192400 = 135949^2 + 43820^2 .

It is a cyclic number.

It is not a de Polignac number, because 20402323001 - 2¹⁰ = 20402321977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20402323061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201161500 + 10201161501.

It is an arithmetic number, because the mean of its divisors is an integer number (10201161501).

Almost surely, 2^20402323001 is an apocalyptic number.

It is an amenable number.

20402323001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402323001 is an equidigital number, since it uses as much as digits as its factorization.

20402323001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20402323001 its reverse (10032320402), we get a palindrome (30434643403).

The spelling of 20402323001 in words is "twenty billion, four hundred two million, three hundred twenty-three thousand, one".