144312534 has 48 divisors (see below), whose sum is σ = 332478432. Its totient is φ = 45137664.

The previous prime is 144312529. The next prime is 144312551. The reversal of 144312534 is 435213441.

It is a happy number.

It is a super-2 number, since 2×144312534² = 41652214939002312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144312498 and 144312507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18654 + ... + 25230.

It is an arithmetic number, because the mean of its divisors is an integer number (6926634).

Almost surely, 2^144312534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144312534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166239216).

144312534 is an abundant number, since it is smaller than the sum of its proper divisors (188165898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144312534 is a wasteful number, since it uses less digits than its factorization.

144312534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661 (or 6658 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 144312534 is about 12013.0151918659. The cubic root of 144312534 is about 524.5272042773.

Adding to 144312534 its reverse (435213441), we get a palindrome (579525975).

The spelling of 144312534 in words is "one hundred forty-four million, three hundred twelve thousand, five hundred thirty-four".