113317978 has 4 divisors (see below), whose sum is σ = 169976970. Its totient is φ = 56658988.

The previous prime is 113317961. The next prime is 113317999. The reversal of 113317978 is 879713311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879713311 = 18229 ⋅48259.

It can be written as a sum of positive squares in only one way, i.e., 92679129 + 20638849 = 9627^2 + 4543^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 113317978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329493 + ... + 28329496.

Almost surely, 2^113317978 is an apocalyptic number.

113317978 is a deficient number, since it is larger than the sum of its proper divisors (56658992).

113317978 is an equidigital number, since it uses as much as digits as its factorization.

113317978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56658991.

The product of its digits is 31752, while the sum is 40.

The square root of 113317978 is about 10645.0917328128. The cubic root of 113317978 is about 483.9118666790.

The spelling of 113317978 in words is "one hundred thirteen million, three hundred seventeen thousand, nine hundred seventy-eight".