4020564431 has 8 divisors (see below), whose sum is σ = 4333815360. Its totient is φ = 3707881632.

The previous prime is 4020564419. The next prime is 4020564433. The reversal of 4020564431 is 1344650204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4020564431 - 2⁶ = 4020564367 is a prime.

It is a super-2 number, since 2×4020564431² = 32329876687644707522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020564394 and 4020564403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020564433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127271 + ... + 155688.

It is an arithmetic number, because the mean of its divisors is an integer number (541726920).

Almost surely, 2^4020564431 is an apocalyptic number.

4020564431 is a deficient number, since it is larger than the sum of its proper divisors (313250929).

4020564431 is a wasteful number, since it uses less digits than its factorization.

4020564431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284065.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 4020564431 is about 63407.9208853279. The cubic root of 4020564431 is about 1590.1167366791.

The spelling of 4020564431 in words is "four billion, twenty million, five hundred sixty-four thousand, four hundred thirty-one".