140244231 has 8 divisors (see below), whose sum is σ = 191553264. Its totient is φ = 91215680.

The previous prime is 140244229. The next prime is 140244253. The reversal of 140244231 is 132442041.

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

It is a cyclic number.

It is not a de Polignac number, because 140244231 - 2¹ = 140244229 is a prime.

It is a super-2 number, since 2×140244231² = 39336888657562722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140244198 and 140244207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140244211) 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, 569976 + ... + 570221.

It is an arithmetic number, because the mean of its divisors is an integer number (23944158).

Almost surely, 2^140244231 is an apocalyptic number.

140244231 is a deficient number, since it is larger than the sum of its proper divisors (51309033).

140244231 is a wasteful number, since it uses less digits than its factorization.

140244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140241.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140244231 is about 11842.4757124513. The cubic root of 140244231 is about 519.5511795418.

Adding to 140244231 its reverse (132442041), we get a palindrome (272686272).

The spelling of 140244231 in words is "one hundred forty million, two hundred forty-four thousand, two hundred thirty-one".