4001212031 has 2 divisors, whose sum is σ = 4001212032. Its totient is φ = 4001212030.

The previous prime is 4001212013. The next prime is 4001212063. The reversal of 4001212031 is 1302121004.

Together with previous prime (4001212013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001212031 is a prime.

It is a super-2 number, since 2×4001212031² = 32019395434038289922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4001211997 and 4001212015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001212001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000606015 + 2000606016.

It is an arithmetic number, because the mean of its divisors is an integer number (2000606016).

Almost surely, 2^4001212031 is an apocalyptic number.

4001212031 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001212031 is an equidigital number, since it uses as much as digits as its factorization.

4001212031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 4001212031 is about 63255.1344240134. The cubic root of 4001212031 is about 1587.5613673841.

Adding to 4001212031 its reverse (1302121004), we get a palindrome (5303333035).

The spelling of 4001212031 in words is "four billion, one million, two hundred twelve thousand, thirty-one".