64224031 has 4 divisors (see below), whose sum is σ = 64556992. Its totient is φ = 63891072.

The previous prime is 64224029. The next prime is 64224071. The reversal of 64224031 is 13042246.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64224031 - 2¹ = 64224029 is a prime.

It is a super-2 number, since 2×64224031² = 8249452315777922, 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 = 64223993 and 64224011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64224071) 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 3 ways as a sum of consecutive naturals, for example, 166191 + ... + 166576.

It is an arithmetic number, because the mean of its divisors is an integer number (16139248).

Almost surely, 2^64224031 is an apocalyptic number.

64224031 is a deficient number, since it is larger than the sum of its proper divisors (332961).

64224031 is a wasteful number, since it uses less digits than its factorization.

64224031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332960.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 64224031 is about 8013.9897055087. The cubic root of 64224031 is about 400.4661877115.

Adding to 64224031 its reverse (13042246), we get a palindrome (77266277).

The spelling of 64224031 in words is "sixty-four million, two hundred twenty-four thousand, thirty-one".