230640737 has 4 divisors (see below), whose sum is σ = 233560320. Its totient is φ = 227721156.

The previous prime is 230640727. The next prime is 230640749. The reversal of 230640737 is 737046032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230640737 - 2¹² = 230636641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230640727) 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, 1459673 + ... + 1459830.

It is an arithmetic number, because the mean of its divisors is an integer number (58390080).

Almost surely, 2^230640737 is an apocalyptic number.

It is an amenable number.

230640737 is a deficient number, since it is larger than the sum of its proper divisors (2919583).

230640737 is an equidigital number, since it uses as much as digits as its factorization.

230640737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919582.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 230640737 is about 15186.8606696710. The cubic root of 230640737 is about 613.2609889926.

Adding to 230640737 its reverse (737046032), we get a palindrome (967686769).

The spelling of 230640737 in words is "two hundred thirty million, six hundred forty thousand, seven hundred thirty-seven".