140313391 has 2 divisors, whose sum is σ = 140313392. Its totient is φ = 140313390.

The previous prime is 140313367. The next prime is 140313403. The reversal of 140313391 is 193313041.

It is a strong prime.

It is an emirp because it is prime and its reverse (193313041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140313391 - 2²⁵ = 106758959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140313301) 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, 70156695 + 70156696.

It is an arithmetic number, because the mean of its divisors is an integer number (70156696).

Almost surely, 2^140313391 is an apocalyptic number.

140313391 is a deficient number, since it is larger than the sum of its proper divisors (1).

140313391 is an equidigital number, since it uses as much as digits as its factorization.

140313391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 140313391 is about 11845.3953500928. The cubic root of 140313391 is about 519.6365692804.

The spelling of 140313391 in words is "one hundred forty million, three hundred thirteen thousand, three hundred ninety-one".