230105021 has 8 divisors (see below), whose sum is σ = 232551000. Its totient is φ = 227671360.

The previous prime is 230105017. The next prime is 230105023. The reversal of 230105021 is 120501032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1792921 + 228312100 = 1339^2 + 15110^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 230105021 - 2² = 230105017 is a prime.

It is a super-3 number, since 3×230105021³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230104987 and 230105005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230105023) 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, 37211 + ... + 42951.

It is an arithmetic number, because the mean of its divisors is an integer number (29068875).

Almost surely, 2^230105021 is an apocalyptic number.

It is an amenable number.

230105021 is a deficient number, since it is larger than the sum of its proper divisors (2445979).

230105021 is a wasteful number, since it uses less digits than its factorization.

230105021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 230105021 is about 15169.2129327793. The cubic root of 230105021 is about 612.7858078054.

Adding to 230105021 its reverse (120501032), we get a palindrome (350606053).

The spelling of 230105021 in words is "two hundred thirty million, one hundred five thousand, twenty-one".