140184731 has 2 divisors, whose sum is σ = 140184732. Its totient is φ = 140184730.

The previous prime is 140184721. The next prime is 140184757. The reversal of 140184731 is 137481041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140184731 - 2¹⁰ = 140183707 is a prime.

It is a super-2 number, since 2×140184731² = 39303517611084722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140184694 and 140184703.

It is not a weakly prime, because it can be changed into another prime (140184721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70092365 + 70092366.

It is an arithmetic number, because the mean of its divisors is an integer number (70092366).

Almost surely, 2^140184731 is an apocalyptic number.

140184731 is a deficient number, since it is larger than the sum of its proper divisors (1).

140184731 is an equidigital number, since it uses as much as digits as its factorization.

140184731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 140184731 is about 11839.9633023080. The cubic root of 140184731 is about 519.4776942423.

The spelling of 140184731 in words is "one hundred forty million, one hundred eighty-four thousand, seven hundred thirty-one".