64207231 has 8 divisors (see below), whose sum is σ = 72304128. Its totient is φ = 56487000.

The previous prime is 64207219. The next prime is 64207243. The reversal of 64207231 is 13270246.

It is an interprime number because it is at equal distance from previous prime (64207219) and next prime (64207243).

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 64207231 - 2⁷ = 64207103 is a prime.

It is a super-2 number, since 2×64207231² = 8245137025374722, 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 = 64207196 and 64207205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64207201) 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 7 ways as a sum of consecutive naturals, for example, 93805 + ... + 94486.

It is an arithmetic number, because the mean of its divisors is an integer number (9038016).

Almost surely, 2^64207231 is an apocalyptic number.

64207231 is a deficient number, since it is larger than the sum of its proper divisors (8096897).

64207231 is a wasteful number, since it uses less digits than its factorization.

64207231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188333.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 64207231 is about 8012.9414698973. The cubic root of 64207231 is about 400.4312661068.

Adding to 64207231 its reverse (13270246), we get a palindrome (77477477).

The spelling of 64207231 in words is "sixty-four million, two hundred seven thousand, two hundred thirty-one".