232121705 has 8 divisors (see below), whose sum is σ = 285340104. Its totient is φ = 181168000.

The previous prime is 232121693. The next prime is 232121717. The reversal of 232121705 is 507121232.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (232121693) and next prime (232121717).

It can be written as a sum of positive squares in 4 ways, for example, as 1658944 + 230462761 = 1288^2 + 15181^2 .

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

It is not a de Polignac number, because 232121705 - 2⁶ = 232121641 is a prime.

It is a Duffinian 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, 565946 + ... + 566355.

It is an arithmetic number, because the mean of its divisors is an integer number (35667513).

Almost surely, 2^232121705 is an apocalyptic number.

It is an amenable number.

232121705 is a deficient number, since it is larger than the sum of its proper divisors (53218399).

232121705 is a wasteful number, since it uses less digits than its factorization.

232121705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132347.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 232121705 is about 15235.5408502619. The cubic root of 232121705 is about 614.5707935722.

Adding to 232121705 its reverse (507121232), we get a palindrome (739242937).

It can be divided in two parts, 2321 and 21705, that multiplied together give a palindrome (50377305).

The spelling of 232121705 in words is "two hundred thirty-two million, one hundred twenty-one thousand, seven hundred five".