20312333047 has 2 divisors, whose sum is σ = 20312333048. Its totient is φ = 20312333046.

The previous prime is 20312333039. The next prime is 20312333177. The reversal of 20312333047 is 74033321302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20312333047 - 2³ = 20312333039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20312333647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156166523 + 10156166524.

It is an arithmetic number, because the mean of its divisors is an integer number (10156166524).

Almost surely, 2^20312333047 is an apocalyptic number.

20312333047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312333047 is an equidigital number, since it uses as much as digits as its factorization.

20312333047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 28.

Adding to 20312333047 its reverse (74033321302), we get a palindrome (94345654349).

The spelling of 20312333047 in words is "twenty billion, three hundred twelve million, three hundred thirty-three thousand, forty-seven".