288938331 has 12 divisors (see below), whose sum is σ = 455296920. Its totient is φ = 175114080.

The previous prime is 288938329. The next prime is 288938359. The reversal of 288938331 is 133839882.

288938331 is a `hidden beast` number, since 288 + 9 + 38 + 331 = 666.

It is not a de Polignac number, because 288938331 - 2¹ = 288938329 is a prime.

It is a super-2 number, since 2×288938331² = 166970718242131122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (288938311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1459186 + ... + 1459383.

It is an arithmetic number, because the mean of its divisors is an integer number (37941410).

Almost surely, 2^288938331 is an apocalyptic number.

288938331 is a deficient number, since it is larger than the sum of its proper divisors (166358589).

288938331 is a wasteful number, since it uses less digits than its factorization.

288938331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918586 (or 2918583 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 288938331 is about 16998.1861091118. The cubic root of 288938331 is about 661.1018715204.

The spelling of 288938331 in words is "two hundred eighty-eight million, nine hundred thirty-eight thousand, three hundred thirty-one".