140331307 has 2 divisors, whose sum is σ = 140331308. Its totient is φ = 140331306.

The previous prime is 140331281. The next prime is 140331341. The reversal of 140331307 is 703133041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140331307 - 2²⁷ = 6113579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140331407) 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 as a sum of consecutive naturals, namely, 70165653 + 70165654.

It is an arithmetic number, because the mean of its divisors is an integer number (70165654).

Almost surely, 2^140331307 is an apocalyptic number.

140331307 is a deficient number, since it is larger than the sum of its proper divisors (1).

140331307 is an equidigital number, since it uses as much as digits as its factorization.

140331307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 140331307 is about 11846.1515691806. The cubic root of 140331307 is about 519.6586850421.

Adding to 140331307 its reverse (703133041), we get a palindrome (843464348).

The spelling of 140331307 in words is "one hundred forty million, three hundred thirty-one thousand, three hundred seven".