20331130233187 has 2 divisors, whose sum is σ = 20331130233188. Its totient is φ = 20331130233186.

The previous prime is 20331130233101. The next prime is 20331130233203. The reversal of 20331130233187 is 78133203113302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20331130233187 - 2⁷ = 20331130233059 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331130231187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165565116593 + 10165565116594.

It is an arithmetic number, because the mean of its divisors is an integer number (10165565116594).

Almost surely, 2^{20331130233187} is an apocalyptic number.

20331130233187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331130233187 is an equidigital number, since it uses as much as digits as its factorization.

20331130233187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

Adding to 20331130233187 its reverse (78133203113302), we get a palindrome (98464333346489).

The spelling of 20331130233187 in words is "twenty trillion, three hundred thirty-one billion, one hundred thirty million, two hundred thirty-three thousand, one hundred eighty-seven".