288621313 has 6 divisors (see below), whose sum is σ = 294895106. Its totient is φ = 282478272.

The previous prime is 288621301. The next prime is 288621331. The reversal of 288621313 is 313126882.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 261404224 + 27217089 = 16168^2 + 5217^2 .

It is not a de Polignac number, because 288621313 - 2²⁵ = 255066881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288621353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63120 + ... + 67537.

Almost surely, 2^288621313 is an apocalyptic number.

It is an amenable number.

288621313 is a deficient number, since it is larger than the sum of its proper divisors (6273793).

288621313 is an equidigital number, since it uses as much as digits as its factorization.

288621313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130751 (or 130704 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 288621313 is about 16988.8584960850. The cubic root of 288621313 is about 660.8599999664.

The spelling of 288621313 in words is "two hundred eighty-eight million, six hundred twenty-one thousand, three hundred thirteen".