20312231321211 has 8 divisors (see below), whose sum is σ = 27092979898944. Its totient is φ = 13536485145480.

The previous prime is 20312231321143. The next prime is 20312231321251. The reversal of 20312231321211 is 11212313221302.

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

It is not a de Polignac number, because 20312231321211 - 2⁹ = 20312231320699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312231321251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250591025 + ... + 1250607266.

It is an arithmetic number, because the mean of its divisors is an integer number (3386622487368).

Almost surely, 2^{20312231321211} is an apocalyptic number.

20312231321211 is a deficient number, since it is larger than the sum of its proper divisors (6780748577733).

20312231321211 is a wasteful number, since it uses less digits than its factorization.

20312231321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501201001.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20312231321211 its reverse (11212313221302), we get a palindrome (31524544542513).

The spelling of 20312231321211 in words is "twenty trillion, three hundred twelve billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred eleven".