4020287031 has 12 divisors (see below), whose sum is σ = 5888872080. Its totient is φ = 2642441760.

The previous prime is 4020287017. The next prime is 4020287077. The reversal of 4020287031 is 1307820204.

It is not a de Polignac number, because 4020287031 - 2⁵ = 4020286999 is a prime.

It is a super-2 number, since 2×4020287031² = 32325415623253589922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4020286986 and 4020287004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020286031) 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 in 11 ways as a sum of consecutive naturals, for example, 3145126 + ... + 3146403.

It is an arithmetic number, because the mean of its divisors is an integer number (490739340).

Almost surely, 2^4020287031 is an apocalyptic number.

4020287031 is a deficient number, since it is larger than the sum of its proper divisors (1868585049).

4020287031 is a wasteful number, since it uses less digits than its factorization.

4020287031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291606 (or 6291603 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 4020287031 is about 63405.7334237212. The cubic root of 4020287031 is about 1590.0801656507.

The spelling of 4020287031 in words is "four billion, twenty million, two hundred eighty-seven thousand, thirty-one".