20231333137 has 2 divisors, whose sum is σ = 20231333138. Its totient is φ = 20231333136.

The previous prime is 20231333051. The next prime is 20231333167. The reversal of 20231333137 is 73133313202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10642810896 + 9588522241 = 103164^2 + 97921^2 .

It is a cyclic number.

It is not a de Polignac number, because 20231333137 - 2¹⁹ = 20230808849 is a prime.

It is not a weakly prime, because it can be changed into another prime (20231333167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115666568 + 10115666569.

It is an arithmetic number, because the mean of its divisors is an integer number (10115666569).

Almost surely, 2^20231333137 is an apocalyptic number.

It is an amenable number.

20231333137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231333137 is an equidigital number, since it uses as much as digits as its factorization.

20231333137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 28.

Adding to 20231333137 its reverse (73133313202), we get a palindrome (93364646339).

The spelling of 20231333137 in words is "twenty billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred thirty-seven".