4012512731 has 2 divisors, whose sum is σ = 4012512732. Its totient is φ = 4012512730.

The previous prime is 4012512727. The next prime is 4012512787. The reversal of 4012512731 is 1372152104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4012512731 - 2² = 4012512727 is a prime.

It is a super-2 number, since 2×4012512731² = 32200516832874156722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4012512731.

It is not a weakly prime, because it can be changed into another prime (4012512331) 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, 2006256365 + 2006256366.

It is an arithmetic number, because the mean of its divisors is an integer number (2006256366).

Almost surely, 2^4012512731 is an apocalyptic number.

4012512731 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012512731 is an equidigital number, since it uses as much as digits as its factorization.

4012512731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 4012512731 is about 63344.3977870182. The cubic root of 4012512731 is about 1589.0545558734.

Adding to 4012512731 its reverse (1372152104), we get a palindrome (5384664835).

The spelling of 4012512731 in words is "four billion, twelve million, five hundred twelve thousand, seven hundred thirty-one".