230891907 has 8 divisors (see below), whose sum is σ = 310845184. Its totient is φ = 152433288.

The previous prime is 230891879. The next prime is 230891923. The reversal of 230891907 is 709198032.

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

It is not a de Polignac number, because 230891907 - 2⁸ = 230891651 is a prime.

It is a super-2 number, since 2×230891907² = 106622145436193298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230891107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373303 + ... + 373920.

It is an arithmetic number, because the mean of its divisors is an integer number (38855648).

Almost surely, 2^230891907 is an apocalyptic number.

230891907 is a deficient number, since it is larger than the sum of its proper divisors (79953277).

230891907 is a wasteful number, since it uses less digits than its factorization.

230891907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747329.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 230891907 is about 15195.1277388510. The cubic root of 230891907 is about 613.4835239533.

The spelling of 230891907 in words is "two hundred thirty million, eight hundred ninety-one thousand, nine hundred seven".