20310011233 has 2 divisors, whose sum is σ = 20310011234. Its totient is φ = 20310011232.

The previous prime is 20310011219. The next prime is 20310011237. The reversal of 20310011233 is 33211001302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13185469584 + 7124541649 = 114828^2 + 84407^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310011233 - 2¹³ = 20310003041 is a prime.

It is not a weakly prime, because it can be changed into another prime (20310011237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155005616 + 10155005617.

It is an arithmetic number, because the mean of its divisors is an integer number (10155005617).

Almost surely, 2^20310011233 is an apocalyptic number.

It is an amenable number.

20310011233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310011233 is an equidigital number, since it uses as much as digits as its factorization.

20310011233 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 20310011233 its reverse (33211001302), we get a palindrome (53521012535).

The spelling of 20310011233 in words is "twenty billion, three hundred ten million, eleven thousand, two hundred thirty-three".