230231513 has 4 divisors (see below), whose sum is σ = 237658368. Its totient is φ = 222804660.

The previous prime is 230231473. The next prime is 230231539. The reversal of 230231513 is 315132032.

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 230231513 - 2⁸ = 230231257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230231563) 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, 3713381 + ... + 3713442.

It is an arithmetic number, because the mean of its divisors is an integer number (59414592).

Almost surely, 2^230231513 is an apocalyptic number.

It is an amenable number.

230231513 is a deficient number, since it is larger than the sum of its proper divisors (7426855).

230231513 is an equidigital number, since it uses as much as digits as its factorization.

230231513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426854.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 230231513 is about 15173.3817259041. The cubic root of 230231513 is about 612.8980729255.

Adding to 230231513 its reverse (315132032), we get a palindrome (545363545).

The spelling of 230231513 in words is "two hundred thirty million, two hundred thirty-one thousand, five hundred thirteen".