140531065 has 8 divisors (see below), whose sum is σ = 169117128. Its totient is φ = 112104960.

The previous prime is 140531047. The next prime is 140531077. The reversal of 140531065 is 560135041.

It can be written as a sum of positive squares in 4 ways, for example, as 1597696 + 138933369 = 1264^2 + 11787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140531065 - 2⁷ = 140530937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38046 + ... + 41575.

It is an arithmetic number, because the mean of its divisors is an integer number (21139641).

Almost surely, 2^140531065 is an apocalyptic number.

It is an amenable number.

140531065 is a deficient number, since it is larger than the sum of its proper divisors (28586063).

140531065 is an equidigital number, since it uses as much as digits as its factorization.

140531065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79979.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 140531065 is about 11854.5799166398. The cubic root of 140531065 is about 519.9051417207.

The spelling of 140531065 in words is "one hundred forty million, five hundred thirty-one thousand, sixty-five".