140131181 has 2 divisors, whose sum is σ = 140131182. Its totient is φ = 140131180.

The previous prime is 140131177. The next prime is 140131207. The reversal of 140131181 is 181131041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137851081 + 2280100 = 11741^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 140131181 - 2² = 140131177 is a prime.

It is a super-2 number, since 2×140131181² = 39273495776909522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140131681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70065590 + 70065591.

It is an arithmetic number, because the mean of its divisors is an integer number (70065591).

Almost surely, 2^140131181 is an apocalyptic number.

It is an amenable number.

140131181 is a deficient number, since it is larger than the sum of its proper divisors (1).

140131181 is an equidigital number, since it uses as much as digits as its factorization.

140131181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 140131181 is about 11837.7016772683. The cubic root of 140131181 is about 519.4115396922.

The spelling of 140131181 in words is "one hundred forty million, one hundred thirty-one thousand, one hundred eighty-one".