231665043 has 8 divisors (see below), whose sum is σ = 325144000. Its totient is φ = 146314728.

The previous prime is 231665023. The next prime is 231665059. The reversal of 231665043 is 340566132.

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

It is not a de Polignac number, because 231665043 - 2²⁰ = 230616467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231665043.

It is not an unprimeable number, because it can be changed into a prime (231665023) 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, 2032093 + ... + 2032206.

It is an arithmetic number, because the mean of its divisors is an integer number (40643000).

Almost surely, 2^231665043 is an apocalyptic number.

231665043 is a deficient number, since it is larger than the sum of its proper divisors (93478957).

231665043 is a wasteful number, since it uses less digits than its factorization.

231665043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064321.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 231665043 is about 15220.5467378803. The cubic root of 231665043 is about 614.1675060319.

The spelling of 231665043 in words is "two hundred thirty-one million, six hundred sixty-five thousand, forty-three".