20332331213 has 2 divisors, whose sum is σ = 20332331214. Its totient is φ = 20332331212.

The previous prime is 20332331147. The next prime is 20332331221. The reversal of 20332331213 is 31213323302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17260178884 + 3072152329 = 131378^2 + 55427^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332331213 - 2⁸ = 20332330957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332331233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166165606 + 10166165607.

It is an arithmetic number, because the mean of its divisors is an integer number (10166165607).

Almost surely, 2^20332331213 is an apocalyptic number.

It is an amenable number.

20332331213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332331213 is an equidigital number, since it uses as much as digits as its factorization.

20332331213 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 20332331213 its reverse (31213323302), we get a palindrome (51545654515).

The spelling of 20332331213 in words is "twenty billion, three hundred thirty-two million, three hundred thirty-one thousand, two hundred thirteen".