230693891 has 4 divisors (see below), whose sum is σ = 231435984. Its totient is φ = 229951800.

The previous prime is 230693873. The next prime is 230693923. The reversal of 230693891 is 198396032.

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

It is a cyclic number.

It is not a de Polignac number, because 230693891 - 2¹⁰ = 230692867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230693831) 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, 370580 + ... + 371201.

It is an arithmetic number, because the mean of its divisors is an integer number (57858996).

Almost surely, 2^230693891 is an apocalyptic number.

230693891 is a deficient number, since it is larger than the sum of its proper divisors (742093).

230693891 is an equidigital number, since it uses as much as digits as its factorization.

230693891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742092.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 230693891 is about 15188.6105684490. The cubic root of 230693891 is about 613.3080965580.

The spelling of 230693891 in words is "two hundred thirty million, six hundred ninety-three thousand, eight hundred ninety-one".