4000655231 has 8 divisors (see below), whose sum is σ = 4066843440. Its totient is φ = 3935003328.

The previous prime is 4000655221. The next prime is 4000655251. The reversal of 4000655231 is 1325560004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000655231 is a prime.

It is a super-2 number, since 2×4000655231² = 32010484554655326722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4000655231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000655201) 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, 119021 + ... + 148886.

It is an arithmetic number, because the mean of its divisors is an integer number (508355430).

Almost surely, 2^4000655231 is an apocalyptic number.

4000655231 is a deficient number, since it is larger than the sum of its proper divisors (66188209).

4000655231 is a wasteful number, since it uses less digits than its factorization.

4000655231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268153.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 4000655231 is about 63250.7330471355. The cubic root of 4000655231 is about 1587.4877234341.

The spelling of 4000655231 in words is "four billion, six hundred fifty-five thousand, two hundred thirty-one".