64304231 has 4 divisors (see below), whose sum is σ = 64339464. Its totient is φ = 64269000.

The previous prime is 64304213. The next prime is 64304237. The reversal of 64304231 is 13240346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64304231 is a prime.

It is a super-2 number, since 2×64304231² = 8270068249002722, 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 = 64304197 and 64304206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64304237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14720 + ... + 18581.

It is an arithmetic number, because the mean of its divisors is an integer number (16084866).

Almost surely, 2^64304231 is an apocalyptic number.

64304231 is a deficient number, since it is larger than the sum of its proper divisors (35233).

64304231 is a wasteful number, since it uses less digits than its factorization.

64304231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35232.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 64304231 is about 8018.9918942471. The cubic root of 64304231 is about 400.6328129249.

Adding to 64304231 its reverse (13240346), we get a palindrome (77544577).

The spelling of 64304231 in words is "sixty-four million, three hundred four thousand, two hundred thirty-one".