140351305 has 4 divisors (see below), whose sum is σ = 168421572. Its totient is φ = 112281040.

The previous prime is 140351297. The next prime is 140351327. The reversal of 140351305 is 503153041.

It is a happy number.

140351305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503153041 = 19 ⋅26481739.

It can be written as a sum of positive squares in 2 ways, for example, as 68508729 + 71842576 = 8277^2 + 8476^2 .

It is not a de Polignac number, because 140351305 - 2³ = 140351297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14035126 + ... + 14035135.

It is an arithmetic number, because the mean of its divisors is an integer number (42105393).

Almost surely, 2^140351305 is an apocalyptic number.

It is an amenable number.

140351305 is a deficient number, since it is larger than the sum of its proper divisors (28070267).

140351305 is an equidigital number, since it uses as much as digits as its factorization.

140351305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28070266.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 140351305 is about 11846.9956107023. The cubic root of 140351305 is about 519.6833686308.

The spelling of 140351305 in words is "one hundred forty million, three hundred fifty-one thousand, three hundred five".