64312232 has 32 divisors (see below), whose sum is σ = 126550080. Its totient is φ = 30581760.

The previous prime is 64312229. The next prime is 64312279. The reversal of 64312232 is 23221346.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 64312198 and 64312207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34607 + ... + 36417.

It is an arithmetic number, because the mean of its divisors is an integer number (3954690).

Almost surely, 2^64312232 is an apocalyptic number.

It is an amenable number.

64312232 is a deficient number, since it is larger than the sum of its proper divisors (62237848).

64312232 is a wasteful number, since it uses less digits than its factorization.

64312232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033 (or 2029 counting only the distinct ones).

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

The square root of 64312232 is about 8019.4907568997. The cubic root of 64312232 is about 400.6494283697.

Adding to 64312232 its reverse (23221346), we get a palindrome (87533578).

The spelling of 64312232 in words is "sixty-four million, three hundred twelve thousand, two hundred thirty-two".