20113031113321 has 4 divisors (see below), whose sum is σ = 20117406369412. Its totient is φ = 20108655857232.

The previous prime is 20113031113297. The next prime is 20113031113333. The reversal of 20113031113321 is 12331113031102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7565602318096 + 12547428795225 = 2750564^2 + 3542235^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113031113321 - 2¹⁷ = 20113030982249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20113031113292 and 20113031113301.

It is not an unprimeable number, because it can be changed into a prime (20113031113381) 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, 2187621150 + ... + 2187630343.

It is an arithmetic number, because the mean of its divisors is an integer number (5029351592353).

Almost surely, 2^{20113031113321} is an apocalyptic number.

It is an amenable number.

20113031113321 is a deficient number, since it is larger than the sum of its proper divisors (4375256091).

20113031113321 is an equidigital number, since it uses as much as digits as its factorization.

20113031113321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375256090.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 20113031113321 its reverse (12331113031102), we get a palindrome (32444144144423).

The spelling of 20113031113321 in words is "twenty trillion, one hundred thirteen billion, thirty-one million, one hundred thirteen thousand, three hundred twenty-one".