140224331 has 4 divisors (see below), whose sum is σ = 151010832. Its totient is φ = 129437832.

The previous prime is 140224319. The next prime is 140224349. The reversal of 140224331 is 133422041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140224331 - 2¹⁸ = 139962187 is a prime.

It is a super-2 number, since 2×140224331² = 39325726008795122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140224391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5393231 + ... + 5393256.

It is an arithmetic number, because the mean of its divisors is an integer number (37752708).

Almost surely, 2^140224331 is an apocalyptic number.

140224331 is a deficient number, since it is larger than the sum of its proper divisors (10786501).

140224331 is a wasteful number, since it uses less digits than its factorization.

140224331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10786500.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140224331 is about 11841.6354867054. The cubic root of 140224331 is about 519.5266044192.

Adding to 140224331 its reverse (133422041), we get a palindrome (273646372).

The spelling of 140224331 in words is "one hundred forty million, two hundred twenty-four thousand, three hundred thirty-one".