3116824981 has 4 divisors (see below), whose sum is σ = 3201063532. Its totient is φ = 3032586432.

The previous prime is 3116824973. The next prime is 3116824987. The reversal of 3116824981 is 1894286113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2238236100 + 878588881 = 47310^2 + 29641^2 .

It is a cyclic number.

It is not a de Polignac number, because 3116824981 - 2³ = 3116824973 is a prime.

It is a super-2 number, since 2×3116824981² = 19429195924371300722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3116824987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42119220 + ... + 42119293.

It is an arithmetic number, because the mean of its divisors is an integer number (800265883).

Almost surely, 2^3116824981 is an apocalyptic number.

It is an amenable number.

3116824981 is a deficient number, since it is larger than the sum of its proper divisors (84238551).

3116824981 is an equidigital number, since it uses as much as digits as its factorization.

3116824981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84238550.

The product of its digits is 82944, while the sum is 43.

The square root of 3116824981 is about 55828.5319617129. The cubic root of 3116824981 is about 1460.7328810978.

The spelling of 3116824981 in words is "three billion, one hundred sixteen million, eight hundred twenty-four thousand, nine hundred eighty-one".