20330031143 has 2 divisors, whose sum is σ = 20330031144. Its totient is φ = 20330031142.

The previous prime is 20330031101. The next prime is 20330031173. The reversal of 20330031143 is 34113003302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20330031143 - 2²⁰ = 20328982567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330031173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165015571 + 10165015572.

It is an arithmetic number, because the mean of its divisors is an integer number (10165015572).

Almost surely, 2^20330031143 is an apocalyptic number.

20330031143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330031143 is an equidigital number, since it uses as much as digits as its factorization.

20330031143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20330031143 its reverse (34113003302), we get a palindrome (54443034445).

The spelling of 20330031143 in words is "twenty billion, three hundred thirty million, thirty-one thousand, one hundred forty-three".