144699231 has 16 divisors (see below), whose sum is σ = 203772800. Its totient is φ = 91080288.

The previous prime is 144699221. The next prime is 144699251. The reversal of 144699231 is 132996441.

It is not a de Polignac number, because 144699231 - 2⁶ = 144699167 is a prime.

It is a super-2 number, since 2×144699231² = 41875734903982722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144699231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144699221) 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, 13365 + ... + 21633.

It is an arithmetic number, because the mean of its divisors is an integer number (12735800).

Almost surely, 2^144699231 is an apocalyptic number.

144699231 is a deficient number, since it is larger than the sum of its proper divisors (59073569).

144699231 is a wasteful number, since it uses less digits than its factorization.

144699231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598.

The product of its digits is 46656, while the sum is 39.

The square root of 144699231 is about 12029.0993428436. The cubic root of 144699231 is about 524.9952906607.

The spelling of 144699231 in words is "one hundred forty-four million, six hundred ninety-nine thousand, two hundred thirty-one".