9980816311 has 4 divisors (see below), whose sum is σ = 9982773472. Its totient is φ = 9978859152.

The previous prime is 9980816281. The next prime is 9980816323. The reversal of 9980816311 is 1136180899.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1136180899 = 7 ⋅162311557.

It is a cyclic number.

It is not a de Polignac number, because 9980816311 - 2¹³ = 9980808119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980816611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970911 + ... + 981136.

It is an arithmetic number, because the mean of its divisors is an integer number (2495693368).

Almost surely, 2^9980816311 is an apocalyptic number.

9980816311 is a deficient number, since it is larger than the sum of its proper divisors (1957161).

9980816311 is a wasteful number, since it uses less digits than its factorization.

9980816311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957160.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 9980816311 is about 99904.0355090824. The cubic root of 9980816311 is about 2153.0561412986.

The spelling of 9980816311 in words is "nine billion, nine hundred eighty million, eight hundred sixteen thousand, three hundred eleven".