113243906 has 4 divisors (see below), whose sum is σ = 169865862. Its totient is φ = 56621952.

The previous prime is 113243903. The next prime is 113243909. The reversal of 113243906 is 609342311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609342311 = 971 ⋅627541.

It is an interprime number because it is at equal distance from previous prime (113243903) and next prime (113243909).

It can be written as a sum of positive squares in only one way, i.e., 92948881 + 20295025 = 9641^2 + 4505^2 .

It is a super-2 number, since 2×113243906² = 25648364492273672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113243903) 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 as a sum of consecutive naturals, namely, 28310975 + ... + 28310978.

Almost surely, 2^113243906 is an apocalyptic number.

113243906 is a deficient number, since it is larger than the sum of its proper divisors (56621956).

113243906 is an equidigital number, since it uses as much as digits as its factorization.

113243906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56621955.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 113243906 is about 10641.6120019478. The cubic root of 113243906 is about 483.8064049411.

The spelling of 113243906 in words is "one hundred thirteen million, two hundred forty-three thousand, nine hundred six".