140631341 has 2 divisors, whose sum is σ = 140631342. Its totient is φ = 140631340.

The previous prime is 140631319. The next prime is 140631343. The reversal of 140631341 is 143136041.

140631341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131905225 + 8726116 = 11485^2 + 2954^2 .

It is an emirp because it is prime and its reverse (143136041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140631341 - 2¹⁸ = 140369197 is a prime.

Together with 140631343, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140631343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70315670 + 70315671.

It is an arithmetic number, because the mean of its divisors is an integer number (70315671).

Almost surely, 2^140631341 is an apocalyptic number.

It is an amenable number.

140631341 is a deficient number, since it is larger than the sum of its proper divisors (1).

140631341 is an equidigital number, since it uses as much as digits as its factorization.

140631341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 140631341 is about 11858.8085826528. The cubic root of 140631341 is about 520.0287718301.

Adding to 140631341 its reverse (143136041), we get a palindrome (283767382).

The spelling of 140631341 in words is "one hundred forty million, six hundred thirty-one thousand, three hundred forty-one".