20303030233 has 2 divisors, whose sum is σ = 20303030234. Its totient is φ = 20303030232.

The previous prime is 20303030227. The next prime is 20303030269. The reversal of 20303030233 is 33203030302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20085408729 + 217621504 = 141723^2 + 14752^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303030233 - 2²⁵ = 20269475801 is a prime.

It is a super-2 number, since 2×20303030233² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20303030233.

It is not a weakly prime, because it can be changed into another prime (20303030213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151515116 + 10151515117.

It is an arithmetic number, because the mean of its divisors is an integer number (10151515117).

Almost surely, 2^20303030233 is an apocalyptic number.

It is an amenable number.

20303030233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303030233 is an equidigital number, since it uses as much as digits as its factorization.

20303030233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 19.

Adding to 20303030233 its reverse (33203030302), we get a palindrome (53506060535).

It can be divided in two parts, 203030302 and 33, that multiplied together give a palindrome (6699999966).

The spelling of 20303030233 in words is "twenty billion, three hundred three million, thirty thousand, two hundred thirty-three".