20131111031027 has 2 divisors, whose sum is σ = 20131111031028. Its totient is φ = 20131111031026.

The previous prime is 20131111030981. The next prime is 20131111031071. The reversal of 20131111031027 is 72013011113102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20131111031027 - 2¹⁴ = 20131111014643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20131111030993 and 20131111031011.

It is not a weakly prime, because it can be changed into another prime (20131111031627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065555515513 + 10065555515514.

It is an arithmetic number, because the mean of its divisors is an integer number (10065555515514).

Almost surely, 2^{20131111031027} is an apocalyptic number.

20131111031027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131111031027 is an equidigital number, since it uses as much as digits as its factorization.

20131111031027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 20131111031027 its reverse (72013011113102), we get a palindrome (92144122144129).

The spelling of 20131111031027 in words is "twenty trillion, one hundred thirty-one billion, one hundred eleven million, thirty-one thousand, twenty-seven".