20111331319 has 2 divisors, whose sum is σ = 20111331320. Its totient is φ = 20111331318.

The previous prime is 20111331181. The next prime is 20111331329. The reversal of 20111331319 is 91313311102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111331319 - 2⁹ = 20111330807 is a prime.

It is a super-2 number, since 2×20111331319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111331293 and 20111331302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111331329) 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, 10055665659 + 10055665660.

It is an arithmetic number, because the mean of its divisors is an integer number (10055665660).

Almost surely, 2^20111331319 is an apocalyptic number.

20111331319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111331319 is an equidigital number, since it uses as much as digits as its factorization.

20111331319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The spelling of 20111331319 in words is "twenty billion, one hundred eleven million, three hundred thirty-one thousand, three hundred nineteen".