997481113 has 8 divisors (see below), whose sum is σ = 1025445960.
Its totient is φ = 969569280.
The previous prime is 997481099. The next prime is 997481119. The reversal of 997481113 is 311184799.
997481113 = 223322 + 223332.
It can be written as a sum of positive squares in 4 ways, for example, as 192737689 + 804743424 = 13883^2 + 28368^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 997481113 - 213 = 997472921 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 997481113.
It is not an unprimeable number, because it can be changed into a prime (997481119) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26553 + ... + 51961.
It is an arithmetic number, because the mean of its divisors is an integer number (128180745).
Almost surely, 2997481113 is an apocalyptic number.
997481113 is the 22333-rd centered square number.
It is an amenable number.
997481113 is a deficient number, since it is larger than the sum of its proper divisors (27964847).
997481113 is a wasteful number, since it uses less digits than its factorization.
997481113 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26507.
The product of its digits is 54432, while the sum is 43.
The square root of 997481113 is about 31582.9243896128.
The cubic root of 997481113 is about 999.1596650350.
The spelling of 997481113 in words is "nine hundred ninety-seven million, four hundred eighty-one thousand, one hundred thirteen".