230011145 has 48 divisors (see below), whose sum is σ = 348355728. Its totient is φ = 144506880.

The previous prime is 230011127. The next prime is 230011147. The reversal of 230011145 is 541110032.

230011145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 5400976 + 224610169 = 2324^2 + 14987^2 .

It is not a de Polignac number, because 230011145 - 2²² = 225816841 is a prime.

It is a super-2 number, since 2×230011145² = 105810253648422050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230011147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 818405 + ... + 818685.

It is an arithmetic number, because the mean of its divisors is an integer number (7257411).

Almost surely, 2^230011145 is an apocalyptic number.

It is an amenable number.

230011145 is a deficient number, since it is larger than the sum of its proper divisors (118344583).

230011145 is a wasteful number, since it uses less digits than its factorization.

230011145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 230011145 is about 15166.1183234208. The cubic root of 230011145 is about 612.7024636799.

Adding to 230011145 its reverse (541110032), we get a palindrome (771121177).

The spelling of 230011145 in words is "two hundred thirty million, eleven thousand, one hundred forty-five".