231139244 has 24 divisors (see below), whose sum is σ = 464210208. Its totient is φ = 98645760.

The previous prime is 231139241. The next prime is 231139253. The reversal of 231139244 is 442931132.

It is not an unprimeable number, because it can be changed into a prime (231139241) 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, 10379 + ... + 23874.

It is an arithmetic number, because the mean of its divisors is an integer number (19342092).

Almost surely, 2^231139244 is an apocalyptic number.

It is an amenable number.

231139244 is an abundant number, since it is smaller than the sum of its proper divisors (233070964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231139244 is a wasteful number, since it uses less digits than its factorization.

231139244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34505 (or 34503 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 231139244 is about 15203.2642547579. The cubic root of 231139244 is about 613.7025052464.

The spelling of 231139244 in words is "two hundred thirty-one million, one hundred thirty-nine thousand, two hundred forty-four".