140244131 has 2 divisors, whose sum is σ = 140244132. Its totient is φ = 140244130.

The previous prime is 140244107. The next prime is 140244161. The reversal of 140244131 is 131442041.

It is a weak prime.

It is an emirp because it is prime and its reverse (131442041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140244131 is a prime.

It is a super-2 number, since 2×140244131² = 39336832559890322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140244161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70122065 + 70122066.

It is an arithmetic number, because the mean of its divisors is an integer number (70122066).

Almost surely, 2^140244131 is an apocalyptic number.

140244131 is a deficient number, since it is larger than the sum of its proper divisors (1).

140244131 is an equidigital number, since it uses as much as digits as its factorization.

140244131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 140244131 is about 11842.4714903604. The cubic root of 140244131 is about 519.5510560545.

Adding to 140244131 its reverse (131442041), we get a palindrome (271686172).

The spelling of 140244131 in words is "one hundred forty million, two hundred forty-four thousand, one hundred thirty-one".