64331 has 4 divisors (see below), whose sum is σ = 67152. Its totient is φ = 61512.

The previous prime is 64327. The next prime is 64333. The reversal of 64331 is 13346.

64331 = T₆₃ + T₆₄ + ... + T₈₅.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13346 = 2 ⋅6673.

It is a cyclic number.

It is not a de Polignac number, because 64331 - 2² = 64327 is a prime.

It is a super-2 number, since 2×64331² = 8276955122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (64333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (16788).

2⁶⁴³³¹ is an apocalyptic number.

64331 is a deficient number, since it is larger than the sum of its proper divisors (2821).

64331 is a wasteful number, since it uses less digits than its factorization.

64331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820.

The product of its digits is 216, while the sum is 17.

The square root of 64331 is about 253.6355653295. The cubic root of 64331 is about 40.0688397924.

Adding to 64331 its reverse (13346), we get a palindrome (77677).

The spelling of 64331 in words is "sixty-four thousand, three hundred thirty-one".