144231513 has 16 divisors (see below), whose sum is σ = 198177600. Its totient is φ = 93237696.

The previous prime is 144231509. The next prime is 144231517. The reversal of 144231513 is 315132441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (144231509) and next prime (144231517).

It is not a de Polignac number, because 144231513 - 2² = 144231509 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144231517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33138 + ... + 37236.

It is an arithmetic number, because the mean of its divisors is an integer number (12386100).

Almost surely, 2^144231513 is an apocalyptic number.

It is an amenable number.

144231513 is a deficient number, since it is larger than the sum of its proper divisors (53946087).

144231513 is a wasteful number, since it uses less digits than its factorization.

144231513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456.

The product of its digits is 1440, while the sum is 24.

The square root of 144231513 is about 12009.6425009240. The cubic root of 144231513 is about 524.4290245996.

Adding to 144231513 its reverse (315132441), we get a palindrome (459363954).

The spelling of 144231513 in words is "one hundred forty-four million, two hundred thirty-one thousand, five hundred thirteen".