231200045 has 8 divisors (see below), whose sum is σ = 282675096. Its totient is φ = 181470016.

The previous prime is 231200023. The next prime is 231200089. The reversal of 231200045 is 540002132.

It can be written as a sum of positive squares in 4 ways, for example, as 63186601 + 168013444 = 7949^2 + 12962^2 .

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 231200045 - 2⁶ = 231199981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231199996 and 231200032.

It is a congruent number.

It is an unprimeable number.

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, 435962 + ... + 436491.

It is an arithmetic number, because the mean of its divisors is an integer number (35334387).

Almost surely, 2^231200045 is an apocalyptic number.

It is an amenable number.

231200045 is a deficient number, since it is larger than the sum of its proper divisors (51475051).

231200045 is an equidigital number, since it uses as much as digits as its factorization.

231200045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872511.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 231200045 is about 15205.2637267494. The cubic root of 231200045 is about 613.7563118524.

Adding to 231200045 its reverse (540002132), we get a palindrome (771202177).

It can be divided in two parts, 2312000 and 45, that multiplied together give a square (104040000 = 10200²).

The spelling of 231200045 in words is "two hundred thirty-one million, two hundred thousand, forty-five".