140312173 has 2 divisors, whose sum is σ = 140312174. Its totient is φ = 140312172.

The previous prime is 140312141. The next prime is 140312191. The reversal of 140312173 is 371213041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85877289 + 54434884 = 9267^2 + 7378^2 .

It is a cyclic number.

It is not a de Polignac number, because 140312173 - 2⁵ = 140312141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140312113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70156086 + 70156087.

It is an arithmetic number, because the mean of its divisors is an integer number (70156087).

Almost surely, 2^140312173 is an apocalyptic number.

It is an amenable number.

140312173 is a deficient number, since it is larger than the sum of its proper divisors (1).

140312173 is an equidigital number, since it uses as much as digits as its factorization.

140312173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 140312173 is about 11845.3439375984. The cubic root of 140312173 is about 519.6350656958.

The spelling of 140312173 in words is "one hundred forty million, three hundred twelve thousand, one hundred seventy-three".