140303291 has 2 divisors, whose sum is σ = 140303292. Its totient is φ = 140303290.

The previous prime is 140303269. The next prime is 140303327. The reversal of 140303291 is 192303041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140303291 - 2²⁶ = 73194427 is a prime.

It is not a weakly prime, because it can be changed into another prime (140303221) 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, 70151645 + 70151646.

It is an arithmetic number, because the mean of its divisors is an integer number (70151646).

Almost surely, 2^140303291 is an apocalyptic number.

140303291 is a deficient number, since it is larger than the sum of its proper divisors (1).

140303291 is an equidigital number, since it uses as much as digits as its factorization.

140303291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 140303291 is about 11844.9690164221. The cubic root of 140303291 is about 519.6241008689.

The spelling of 140303291 in words is "one hundred forty million, three hundred three thousand, two hundred ninety-one".