20303023361 has 2 divisors, whose sum is σ = 20303023362. Its totient is φ = 20303023360.

The previous prime is 20303023261. The next prime is 20303023373. The reversal of 20303023361 is 16332030302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15695328961 + 4607694400 = 125281^2 + 67880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303023361 is a prime.

It is not a weakly prime, because it can be changed into another prime (20303023261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151511680 + 10151511681.

It is an arithmetic number, because the mean of its divisors is an integer number (10151511681).

Almost surely, 2^20303023361 is an apocalyptic number.

It is an amenable number.

20303023361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303023361 is an equidigital number, since it uses as much as digits as its factorization.

20303023361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20303023361 its reverse (16332030302), we get a palindrome (36635053663).

The spelling of 20303023361 in words is "twenty billion, three hundred three million, twenty-three thousand, three hundred sixty-one".