20312220331011 has 8 divisors (see below), whose sum is σ = 30951954790144. Its totient is φ = 11606983046280.

The previous prime is 20312220330953. The next prime is 20312220331027. The reversal of 20312220331011 is 11013302221302.

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

It is not a de Polignac number, because 20312220331011 - 2¹⁰ = 20312220329987 is a prime.

It is a super-3 number, since 3×20312220331011³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 967248587191 = 20312220331011 / (2 + 0 + 3 + 1 + 2 + 2 + 2 + 0 + 3 + 3 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312220351011) 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, 483624293575 + ... + 483624293616.

It is an arithmetic number, because the mean of its divisors is an integer number (3868994348768).

Almost surely, 2^{20312220331011} is an apocalyptic number.

20312220331011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20312220331011 is a deficient number, since it is larger than the sum of its proper divisors (10639734459133).

20312220331011 is an equidigital number, since it uses as much as digits as its factorization.

20312220331011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967248587201.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20312220331011 its reverse (11013302221302), we get a palindrome (31325522552313).

The spelling of 20312220331011 in words is "twenty trillion, three hundred twelve billion, two hundred twenty million, three hundred thirty-one thousand, eleven".