655231313 has 8 divisors (see below), whose sum is σ = 715659840. Its totient is φ = 594946480.

The previous prime is 655231303. The next prime is 655231331. The reversal of 655231313 is 313132556.

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 655231313 - 2¹⁴ = 655214929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (655231303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26270 + ... + 44727.

It is an arithmetic number, because the mean of its divisors is an integer number (89457480).

Almost surely, 2^655231313 is an apocalyptic number.

It is an amenable number.

655231313 is a deficient number, since it is larger than the sum of its proper divisors (60428527).

655231313 is a wasteful number, since it uses less digits than its factorization.

655231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71847.

The product of its digits is 8100, while the sum is 29.

The square root of 655231313 is about 25597.4864586350. The cubic root of 655231313 is about 868.5567797052.

Adding to 655231313 its reverse (313132556), we get a palindrome (968363869).

The spelling of 655231313 in words is "six hundred fifty-five million, two hundred thirty-one thousand, three hundred thirteen".