113239 has 6 divisors (see below), whose sum is σ = 131784. Its totient is φ = 97020.

The previous prime is 113233. The next prime is 113279. The reversal of 113239 is 932311.

113239 = T₄₂ + T₄₃ + ... + T₉₀.

It is not a de Polignac number, because 113239 - 2⁷ = 113111 is a prime.

It is a super-2 number, since 2×113239² = 25646142242, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113233) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 1107 + ... + 1204.

It is an arithmetic number, because the mean of its divisors is an integer number (21964).

2¹¹³²³⁹ is an apocalyptic number.

113239 is a deficient number, since it is larger than the sum of its proper divisors (18545).

113239 is an equidigital number, since it uses as much as digits as its factorization.

113239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325 (or 2318 counting only the distinct ones).

The product of its digits is 162, while the sum is 19.

The square root of 113239 is about 336.5100295682. The cubic root of 113239 is about 48.3799418286.

The spelling of 113239 in words is "one hundred thirteen thousand, two hundred thirty-nine".