20111031303149 has 2 divisors, whose sum is σ = 20111031303150. Its totient is φ = 20111031303148.

The previous prime is 20111031303067. The next prime is 20111031303179. The reversal of 20111031303149 is 94130313011102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18871917249124 + 1239114054025 = 4344182^2 + 1113155^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111031303149 - 2⁸ = 20111031302893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111031303179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055515651574 + 10055515651575.

It is an arithmetic number, because the mean of its divisors is an integer number (10055515651575).

Almost surely, 2^{20111031303149} is an apocalyptic number.

It is an amenable number.

20111031303149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111031303149 is an equidigital number, since it uses as much as digits as its factorization.

20111031303149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 20111031303149 in words is "twenty trillion, one hundred eleven billion, thirty-one million, three hundred three thousand, one hundred forty-nine".