20113031321323 has 2 divisors, whose sum is σ = 20113031321324. Its totient is φ = 20113031321322.

The previous prime is 20113031321303. The next prime is 20113031321363. The reversal of 20113031321323 is 32312313031102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20113031321323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113031321303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056515660661 + 10056515660662.

It is an arithmetic number, because the mean of its divisors is an integer number (10056515660662).

Almost surely, 2^{20113031321323} is an apocalyptic number.

20113031321323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113031321323 is an equidigital number, since it uses as much as digits as its factorization.

20113031321323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20113031321323 its reverse (32312313031102), we get a palindrome (52425344352425).

The spelling of 20113031321323 in words is "twenty trillion, one hundred thirteen billion, thirty-one million, three hundred twenty-one thousand, three hundred twenty-three".