113403278 has 4 divisors (see below), whose sum is σ = 170104920. Its totient is φ = 56701638.

The previous prime is 113403221. The next prime is 113403299. The reversal of 113403278 is 872304311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 872304311 = 29 ⋅30079459.

It is a super-2 number, since 2×113403278² = 25720606922290568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113403278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28350818 + ... + 28350821.

It is an arithmetic number, because the mean of its divisors is an integer number (42526230).

Almost surely, 2^113403278 is an apocalyptic number.

113403278 is a deficient number, since it is larger than the sum of its proper divisors (56701642).

113403278 is an equidigital number, since it uses as much as digits as its factorization.

113403278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56701641.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 113403278 is about 10649.0975204474. The cubic root of 113403278 is about 484.0332576241.

Adding to 113403278 its reverse (872304311), we get a palindrome (985707589).

The spelling of 113403278 in words is "one hundred thirteen million, four hundred three thousand, two hundred seventy-eight".