231824139 has 8 divisors (see below), whose sum is σ = 311355600. Its totient is φ = 153421056.

The previous prime is 231824123. The next prime is 231824147. The reversal of 231824139 is 931428132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231824139 - 2⁴ = 231824123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231824239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281614 + ... + 282435.

It is an arithmetic number, because the mean of its divisors is an integer number (38919450).

Almost surely, 2^231824139 is an apocalyptic number.

231824139 is a deficient number, since it is larger than the sum of its proper divisors (79531461).

231824139 is a wasteful number, since it uses less digits than its factorization.

231824139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564189.

The product of its digits is 10368, while the sum is 33.

The square root of 231824139 is about 15225.7721971662. The cubic root of 231824139 is about 614.3080670663.

The spelling of 231824139 in words is "two hundred thirty-one million, eight hundred twenty-four thousand, one hundred thirty-nine".