4031512139 has 2 divisors, whose sum is σ = 4031512140. Its totient is φ = 4031512138.

The previous prime is 4031512127. The next prime is 4031512159. The reversal of 4031512139 is 9312151304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4031512139 - 2²⁴ = 4014734923 is a prime.

It is not a weakly prime, because it can be changed into another prime (4031512109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015756069 + 2015756070.

It is an arithmetic number, because the mean of its divisors is an integer number (2015756070).

Almost surely, 2^4031512139 is an apocalyptic number.

4031512139 is a deficient number, since it is larger than the sum of its proper divisors (1).

4031512139 is an equidigital number, since it uses as much as digits as its factorization.

4031512139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 4031512139 is about 63494.1898050522. The cubic root of 4031512139 is about 1591.5586865604.

The spelling of 4031512139 in words is "four billion, thirty-one million, five hundred twelve thousand, one hundred thirty-nine".