231970685 has 8 divisors (see below), whose sum is σ = 278531160. Its totient is φ = 185465664.

The previous prime is 231970667. The next prime is 231970691. The reversal of 231970685 is 586079132.

It can be written as a sum of positive squares in 4 ways, for example, as 43375396 + 188595289 = 6586^2 + 13733^2 .

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 231970685 - 2⁸ = 231970429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4022 + ... + 21911.

It is an arithmetic number, because the mean of its divisors is an integer number (34816395).

Almost surely, 2^231970685 is an apocalyptic number.

It is an amenable number.

231970685 is a deficient number, since it is larger than the sum of its proper divisors (46560475).

231970685 is a wasteful number, since it uses less digits than its factorization.

231970685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27727.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 231970685 is about 15230.5838693072. The cubic root of 231970685 is about 614.4374833092.

The spelling of 231970685 in words is "two hundred thirty-one million, nine hundred seventy thousand, six hundred eighty-five".