4020685331 has 16 divisors (see below), whose sum is σ = 4411653120. Its totient is φ = 3641625120.

The previous prime is 4020685321. The next prime is 4020685369. The reversal of 4020685331 is 1335860204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020685331 is a prime.

It is a super-2 number, since 2×4020685331² = 32331821061837159122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020685301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427166 + ... + 436476.

It is an arithmetic number, because the mean of its divisors is an integer number (275728320).

Almost surely, 2^4020685331 is an apocalyptic number.

4020685331 is a deficient number, since it is larger than the sum of its proper divisors (390967789).

4020685331 is a wasteful number, since it uses less digits than its factorization.

4020685331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 4020685331 is about 63408.8742290856. The cubic root of 4020685331 is about 1590.1326750040.

The spelling of 4020685331 in words is "four billion, twenty million, six hundred eighty-five thousand, three hundred thirty-one".