140731223 has 4 divisors (see below), whose sum is σ = 140771400. Its totient is φ = 140691048.

The previous prime is 140731211. The next prime is 140731237. The reversal of 140731223 is 322137041.

140731223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322137041 = 41 ⋅7857001.

It is a cyclic number.

It is not a de Polignac number, because 140731223 - 2¹⁶ = 140665687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140731823) 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, 14273 + ... + 22026.

It is an arithmetic number, because the mean of its divisors is an integer number (35192850).

Almost surely, 2^140731223 is an apocalyptic number.

140731223 is a deficient number, since it is larger than the sum of its proper divisors (40177).

140731223 is an equidigital number, since it uses as much as digits as its factorization.

140731223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40176.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 140731223 is about 11863.0191351106. The cubic root of 140731223 is about 520.1518577683.

Adding to 140731223 its reverse (322137041), we get a palindrome (462868264).

The spelling of 140731223 in words is "one hundred forty million, seven hundred thirty-one thousand, two hundred twenty-three".