140331530 has 24 divisors (see below), whose sum is σ = 266597892. Its totient is φ = 53176896.

The previous prime is 140331517. The next prime is 140331539. The reversal of 140331530 is 35133041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129527161 + 10804369 = 11381^2 + 3287^2 .

It is not an unprimeable number, because it can be changed into a prime (140331539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15827 + ... + 23046.

Almost surely, 2^140331530 is an apocalyptic number.

140331530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140331530 is a deficient number, since it is larger than the sum of its proper divisors (126266362).

140331530 is a wasteful number, since it uses less digits than its factorization.

140331530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38918 (or 38899 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 140331530 is about 11846.1609815163. The cubic root of 140331530 is about 519.6589603046.

Adding to 140331530 its reverse (35133041), we get a palindrome (175464571).

The spelling of 140331530 in words is "one hundred forty million, three hundred thirty-one thousand, five hundred thirty".