140231144 has 32 divisors (see below), whose sum is σ = 266198400. Its totient is φ = 69251520.

The previous prime is 140231107. The next prime is 140231173. The reversal of 140231144 is 441132041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390437 + ... + 390795.

It is an arithmetic number, because the mean of its divisors is an integer number (8318700).

Almost surely, 2^140231144 is an apocalyptic number.

It is an amenable number.

140231144 is a deficient number, since it is larger than the sum of its proper divisors (125967256).

140231144 is a wasteful number, since it uses less digits than its factorization.

140231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 140231144 is about 11841.9231546232. The cubic root of 140231144 is about 519.5350182643.

Adding to 140231144 its reverse (441132041), we get a palindrome (581363185).

The spelling of 140231144 in words is "one hundred forty million, two hundred thirty-one thousand, one hundred forty-four".