231067385 has 4 divisors (see below), whose sum is σ = 277280868. Its totient is φ = 184853904.

The previous prime is 231067381. The next prime is 231067391. The reversal of 231067385 is 583760132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129299641 + 101767744 = 11371^2 + 10088^2 .

It is a cyclic number.

It is not a de Polignac number, because 231067385 - 2² = 231067381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231067381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23106734 + ... + 23106743.

It is an arithmetic number, because the mean of its divisors is an integer number (69320217).

Almost surely, 2^231067385 is an apocalyptic number.

It is an amenable number.

231067385 is a deficient number, since it is larger than the sum of its proper divisors (46213483).

231067385 is an equidigital number, since it uses as much as digits as its factorization.

231067385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46213482.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 231067385 is about 15200.9007956766. The cubic root of 231067385 is about 613.6389005573.

The spelling of 231067385 in words is "two hundred thirty-one million, sixty-seven thousand, three hundred eighty-five".