20031232220347 has 2 divisors, whose sum is σ = 20031232220348. Its totient is φ = 20031232220346.

The previous prime is 20031232220303. The next prime is 20031232220353. The reversal of 20031232220347 is 74302223213002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031232220347 is a prime.

It is not a weakly prime, because it can be changed into another prime (20031232220647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015616110173 + 10015616110174.

It is an arithmetic number, because the mean of its divisors is an integer number (10015616110174).

Almost surely, 2^{20031232220347} is an apocalyptic number.

20031232220347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031232220347 is an equidigital number, since it uses as much as digits as its factorization.

20031232220347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 31.

Adding to 20031232220347 its reverse (74302223213002), we get a palindrome (94333455433349).

The spelling of 20031232220347 in words is "twenty trillion, thirty-one billion, two hundred thirty-two million, two hundred twenty thousand, three hundred forty-seven".