223131439 has 4 divisors (see below), whose sum is σ = 223176280. Its totient is φ = 223086600.

The previous prime is 223131413. The next prime is 223131457. The reversal of 223131439 is 934131322.

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 223131439 - 2¹⁷ = 223000367 is a prime.

It is a super-3 number, since 3×223131439³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223135439) 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 in 3 ways as a sum of consecutive naturals, for example, 13869 + ... + 25270.

It is an arithmetic number, because the mean of its divisors is an integer number (55794070).

Almost surely, 2^223131439 is an apocalyptic number.

223131439 is a deficient number, since it is larger than the sum of its proper divisors (44841).

223131439 is an equidigital number, since it uses as much as digits as its factorization.

223131439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44840.

The product of its digits is 3888, while the sum is 28.

The square root of 223131439 is about 14937.5847780021. The cubic root of 223131439 is about 606.5318184701.

It can be divided in two parts, 2231 and 31439, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 223131439 in words is "two hundred twenty-three million, one hundred thirty-one thousand, four hundred thirty-nine".