144231997 has 8 divisors (see below), whose sum is σ = 177516416. Its totient is φ = 114117552.

The previous prime is 144231979. The next prime is 144232009. The reversal of 144231997 is 799132441.

144231997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144231997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144232997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792393 + ... + 792574.

It is an arithmetic number, because the mean of its divisors is an integer number (22189552).

Almost surely, 2^144231997 is an apocalyptic number.

It is an amenable number.

144231997 is a deficient number, since it is larger than the sum of its proper divisors (33284419).

144231997 is a wasteful number, since it uses less digits than its factorization.

144231997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584987.

The product of its digits is 54432, while the sum is 40.

The square root of 144231997 is about 12009.6626513820. The cubic root of 144231997 is about 524.4296112106.

The spelling of 144231997 in words is "one hundred forty-four million, two hundred thirty-one thousand, nine hundred ninety-seven".