232818139 has 4 divisors (see below), whose sum is σ = 235218424. Its totient is φ = 230417856.

The previous prime is 232818137. The next prime is 232818149. The reversal of 232818139 is 931818232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232818139 - 2¹ = 232818137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232818098 and 232818107.

It is not an unprimeable number, because it can be changed into a prime (232818137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199997 + ... + 1200190.

It is an arithmetic number, because the mean of its divisors is an integer number (58804606).

Almost surely, 2^232818139 is an apocalyptic number.

232818139 is a deficient number, since it is larger than the sum of its proper divisors (2400285).

232818139 is an equidigital number, since it uses as much as digits as its factorization.

232818139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400284.

The product of its digits is 20736, while the sum is 37.

The square root of 232818139 is about 15258.3793045002. The cubic root of 232818139 is about 615.1848114898.

The spelling of 232818139 in words is "two hundred thirty-two million, eight hundred eighteen thousand, one hundred thirty-nine".