64231121 has 8 divisors (see below), whose sum is σ = 66311520. Its totient is φ = 62177472.

The previous prime is 64231103. The next prime is 64231129. The reversal of 64231121 is 12113246.

64231121 is digitally balanced in base 2, 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 64231121 - 2²² = 60036817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64231093 and 64231102.

It is not an unprimeable number, because it can be changed into a prime (64231129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (8288940).

Almost surely, 2^64231121 is an apocalyptic number.

It is an amenable number.

64231121 is a deficient number, since it is larger than the sum of its proper divisors (2080399).

64231121 is a wasteful number, since it uses less digits than its factorization.

64231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13375.

The product of its digits is 288, while the sum is 20.

The square root of 64231121 is about 8014.4320447553. The cubic root of 64231121 is about 400.4809236327.

Adding to 64231121 its reverse (12113246), we get a palindrome (76344367).

The spelling of 64231121 in words is "sixty-four million, two hundred thirty-one thousand, one hundred twenty-one".