140731577 has 24 divisors (see below), whose sum is σ = 171266760. Its totient is φ = 115153920.

The previous prime is 140731573. The next prime is 140731603. The reversal of 140731577 is 775137041.

It can be written as a sum of positive squares in 4 ways, for example, as 23464336 + 117267241 = 4844^2 + 10829^2 .

It is not a de Polignac number, because 140731577 - 2² = 140731573 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140731571) 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 in 23 ways as a sum of consecutive naturals, for example, 137327 + ... + 138347.

It is an arithmetic number, because the mean of its divisors is an integer number (7136115).

Almost surely, 2^140731577 is an apocalyptic number.

It is an amenable number.

140731577 is a deficient number, since it is larger than the sum of its proper divisors (30535183).

140731577 is a wasteful number, since it uses less digits than its factorization.

140731577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 140731577 is about 11863.0340554177. The cubic root of 140731577 is about 520.1522939037.

The spelling of 140731577 in words is "one hundred forty million, seven hundred thirty-one thousand, five hundred seventy-seven".