20433231211 has 8 divisors (see below), whose sum is σ = 21372287904. Its totient is φ = 19498395840.

The previous prime is 20433231193. The next prime is 20433231229. The reversal of 20433231211 is 11213233402.

It is an interprime number because it is at equal distance from previous prime (20433231193) and next prime (20433231229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20433231211 - 2⁵ = 20433231179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20433231251) 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 in 7 ways as a sum of consecutive naturals, for example, 1045426 + ... + 1064791.

It is an arithmetic number, because the mean of its divisors is an integer number (2671535988).

Almost surely, 2^20433231211 is an apocalyptic number.

20433231211 is a deficient number, since it is larger than the sum of its proper divisors (939056693).

20433231211 is a wasteful number, since it uses less digits than its factorization.

20433231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110661.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20433231211 its reverse (11213233402), we get a palindrome (31646464613).

The spelling of 20433231211 in words is "twenty billion, four hundred thirty-three million, two hundred thirty-one thousand, two hundred eleven".