664314231 has 32 divisors (see below), whose sum is σ = 1029523968. Its totient is φ = 373201920.

The previous prime is 664314199. The next prime is 664314241. The reversal of 664314231 is 132413466.

It is not a de Polignac number, because 664314231 - 2⁵ = 664314199 is a prime.

It is a super-2 number, since 2×664314231² = 882626795018242722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664314241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309795 + ... + 311931.

It is an arithmetic number, because the mean of its divisors is an integer number (32172624).

Almost surely, 2^664314231 is an apocalyptic number.

664314231 is a deficient number, since it is larger than the sum of its proper divisors (365209737).

664314231 is a wasteful number, since it uses less digits than its factorization.

664314231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391.

The product of its digits is 10368, while the sum is 30.

The square root of 664314231 is about 25774.2939961505. The cubic root of 664314231 is about 872.5517328515.

Adding to 664314231 its reverse (132413466), we get a palindrome (796727697).

The spelling of 664314231 in words is "six hundred sixty-four million, three hundred fourteen thousand, two hundred thirty-one".