231151439 has 8 divisors (see below), whose sum is σ = 235839120. Its totient is φ = 226489536.

The previous prime is 231151433. The next prime is 231151451. The reversal of 231151439 is 934151132.

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

It is a cyclic number.

It is not a de Polignac number, because 231151439 - 2⁸ = 231151183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231151433) 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 7 ways as a sum of consecutive naturals, for example, 12209 + ... + 24725.

It is an arithmetic number, because the mean of its divisors is an integer number (29479890).

Almost surely, 2^231151439 is an apocalyptic number.

231151439 is a deficient number, since it is larger than the sum of its proper divisors (4687681).

231151439 is a wasteful number, since it uses less digits than its factorization.

231151439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889.

The product of its digits is 3240, while the sum is 29.

The square root of 231151439 is about 15203.6653146536. The cubic root of 231151439 is about 613.7132981207.

The spelling of 231151439 in words is "two hundred thirty-one million, one hundred fifty-one thousand, four hundred thirty-nine".