144253631 has 4 divisors (see below), whose sum is σ = 150525552. Its totient is φ = 137981712.

The previous prime is 144253601. The next prime is 144253673. The reversal of 144253631 is 136352441.

144253631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144253631 is a prime.

It is a super-3 number, since 3×144253631³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144253594 and 144253603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144253601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135926 + ... + 3135971.

It is an arithmetic number, because the mean of its divisors is an integer number (37631388).

Almost surely, 2^144253631 is an apocalyptic number.

144253631 is a deficient number, since it is larger than the sum of its proper divisors (6271921).

144253631 is an equidigital number, since it uses as much as digits as its factorization.

144253631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271920.

The product of its digits is 8640, while the sum is 29.

The square root of 144253631 is about 12010.5633090209. The cubic root of 144253631 is about 524.4558304112.

The spelling of 144253631 in words is "one hundred forty-four million, two hundred fifty-three thousand, six hundred thirty-one".