140440331 has 2 divisors, whose sum is σ = 140440332. Its totient is φ = 140440330.

The previous prime is 140440297. The next prime is 140440351. The reversal of 140440331 is 133044041.

It is a happy number.

It is an a-pointer prime, because the next prime (140440351) can be obtained adding 140440331 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140440331 - 2¹⁰ = 140439307 is a prime.

It is a super-2 number, since 2×140440331² = 39446973142779122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140440351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70220165 + 70220166.

It is an arithmetic number, because the mean of its divisors is an integer number (70220166).

Almost surely, 2^140440331 is an apocalyptic number.

140440331 is a deficient number, since it is larger than the sum of its proper divisors (1).

140440331 is an equidigital number, since it uses as much as digits as its factorization.

140440331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140440331 is about 11850.7523389868. The cubic root of 140440331 is about 519.7932252340.

Adding to 140440331 its reverse (133044041), we get a palindrome (273484372).

The spelling of 140440331 in words is "one hundred forty million, four hundred forty thousand, three hundred thirty-one".