140263213 has 2 divisors, whose sum is σ = 140263214. Its totient is φ = 140263212.

The previous prime is 140263163. The next prime is 140263241. The reversal of 140263213 is 312362041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96000804 + 44262409 = 9798^2 + 6653^2 .

It is an emirp because it is prime and its reverse (312362041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140263213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140263273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70131606 + 70131607.

It is an arithmetic number, because the mean of its divisors is an integer number (70131607).

Almost surely, 2^140263213 is an apocalyptic number.

It is an amenable number.

140263213 is a deficient number, since it is larger than the sum of its proper divisors (1).

140263213 is an equidigital number, since it uses as much as digits as its factorization.

140263213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 140263213 is about 11843.2771224860. The cubic root of 140263213 is about 519.5746188318.

The spelling of 140263213 in words is "one hundred forty million, two hundred sixty-three thousand, two hundred thirteen".