19950806311 has 2 divisors, whose sum is σ = 19950806312. Its totient is φ = 19950806310.

The previous prime is 19950806299. The next prime is 19950806411. The reversal of 19950806311 is 11360805991.

It is a weak prime.

It is an emirp because it is prime and its reverse (11360805991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19950806311 - 2⁵ = 19950806279 is a prime.

It is a super-3 number, since 3×19950806311³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19950806111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9975403155 + 9975403156.

It is an arithmetic number, because the mean of its divisors is an integer number (9975403156).

Almost surely, 2^19950806311 is an apocalyptic number.

19950806311 is a deficient number, since it is larger than the sum of its proper divisors (1).

19950806311 is an equidigital number, since it uses as much as digits as its factorization.

19950806311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 19950806311 in words is "nineteen billion, nine hundred fifty million, eight hundred six thousand, three hundred eleven".