20133321031 has 2 divisors, whose sum is σ = 20133321032. Its totient is φ = 20133321030.

The previous prime is 20133320989. The next prime is 20133321037. The reversal of 20133321031 is 13012333102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20133321031 - 2⁷ = 20133320903 is a prime.

It is a super-2 number, since 2×20133321031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133321037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066660515 + 10066660516.

It is an arithmetic number, because the mean of its divisors is an integer number (10066660516).

Almost surely, 2^20133321031 is an apocalyptic number.

20133321031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133321031 is an equidigital number, since it uses as much as digits as its factorization.

20133321031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20133321031 its reverse (13012333102), we get a palindrome (33145654133).

The spelling of 20133321031 in words is "twenty billion, one hundred thirty-three million, three hundred twenty-one thousand, thirty-one".