230143445 has 12 divisors (see below), whose sum is σ = 321261804. Its totient is φ = 157812480.

The previous prime is 230143427. The next prime is 230143453. The reversal of 230143445 is 544341032.

It can be written as a sum of positive squares in 2 ways, for example, as 180257476 + 49885969 = 13426^2 + 7063^2 .

It is not a de Polignac number, because 230143445 - 2⁸ = 230143189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469436 + ... + 469925.

It is an arithmetic number, because the mean of its divisors is an integer number (26771817).

Almost surely, 2^230143445 is an apocalyptic number.

It is an amenable number.

230143445 is a deficient number, since it is larger than the sum of its proper divisors (91118359).

230143445 is an equidigital number, since it uses as much as digits as its factorization.

230143445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939380 (or 939373 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 230143445 is about 15170.4793925571. The cubic root of 230143445 is about 612.8199145092.

Adding to 230143445 its reverse (544341032), we get a palindrome (774484477).

The spelling of 230143445 in words is "two hundred thirty million, one hundred forty-three thousand, four hundred forty-five".