144431697 has 16 divisors (see below), whose sum is σ = 207433728. Its totient is φ = 89129040.

The previous prime is 144431689. The next prime is 144431747. The reversal of 144431697 is 796134441.

144431697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144431697 - 2³ = 144431689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144431627) 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, 31623 + ... + 35900.

It is an arithmetic number, because the mean of its divisors is an integer number (12964608).

Almost surely, 2^144431697 is an apocalyptic number.

It is an amenable number.

144431697 is a deficient number, since it is larger than the sum of its proper divisors (63002031).

144431697 is a wasteful number, since it uses less digits than its factorization.

144431697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67580.

The product of its digits is 72576, while the sum is 39.

The square root of 144431697 is about 12017.9739141005. The cubic root of 144431697 is about 524.6715369456.

The spelling of 144431697 in words is "one hundred forty-four million, four hundred thirty-one thousand, six hundred ninety-seven".