144393831 has 6 divisors (see below), whose sum is σ = 208568880. Its totient is φ = 96262548.

The previous prime is 144393829. The next prime is 144393857. The reversal of 144393831 is 138393441.

144393831 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 144393831 - 2¹ = 144393829 is a prime.

It is a super-2 number, since 2×144393831² = 41699156861713122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144393881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8021871 + ... + 8021888.

It is an arithmetic number, because the mean of its divisors is an integer number (34761480).

Almost surely, 2^144393831 is an apocalyptic number.

144393831 is a deficient number, since it is larger than the sum of its proper divisors (64175049).

144393831 is a wasteful number, since it uses less digits than its factorization.

144393831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16043765 (or 16043762 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 144393831 is about 12016.3984204919. The cubic root of 144393831 is about 524.6256814783.

The spelling of 144393831 in words is "one hundred forty-four million, three hundred ninety-three thousand, eight hundred thirty-one".