20312012033 has 4 divisors (see below), whose sum is σ = 20312326320. Its totient is φ = 20311697748.

The previous prime is 20312011999. The next prime is 20312012059. The reversal of 20312012033 is 33021021302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20312012033 - 2⁶ = 20312011969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312012533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20723 + ... + 202616.

It is an arithmetic number, because the mean of its divisors is an integer number (5078081580).

Almost surely, 2^20312012033 is an apocalyptic number.

It is an amenable number.

20312012033 is a deficient number, since it is larger than the sum of its proper divisors (314287).

20312012033 is an equidigital number, since it uses as much as digits as its factorization.

20312012033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314286.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20312012033 its reverse (33021021302), we get a palindrome (53333033335).

The spelling of 20312012033 in words is "twenty billion, three hundred twelve million, twelve thousand, thirty-three".