4145665231 has 8 divisors (see below), whose sum is σ = 4187649024. Its totient is φ = 4103715000.

The previous prime is 4145665219. The next prime is 4145665241. The reversal of 4145665231 is 1325665414.

4145665231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4145665231 - 2²⁵ = 4112110799 is a prime.

It is a super-2 number, since 2×4145665231² = 34373080415044566722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4145665241) 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, 294606 + ... + 308356.

It is an arithmetic number, because the mean of its divisors is an integer number (523456128).

Almost surely, 2^4145665231 is an apocalyptic number.

4145665231 is a deficient number, since it is larger than the sum of its proper divisors (41983793).

4145665231 is a wasteful number, since it uses less digits than its factorization.

4145665231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16781.

The product of its digits is 86400, while the sum is 37.

The square root of 4145665231 is about 64386.8405110858. The cubic root of 4145665231 is about 1606.4408642045.

The spelling of 4145665231 in words is "four billion, one hundred forty-five million, six hundred sixty-five thousand, two hundred thirty-one".