288385631 has 8 divisors (see below), whose sum is σ = 292460544. Its totient is φ = 284339160.

The previous prime is 288385619. The next prime is 288385639. The reversal of 288385631 is 136583882.

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 288385631 - 2¹⁴ = 288369247 is a prime.

It is a super-2 number, since 2×288385631² = 166332544334536322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288385639) 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, 13736 + ... + 27666.

It is an arithmetic number, because the mean of its divisors is an integer number (36557568).

Almost surely, 2^288385631 is an apocalyptic number.

288385631 is a deficient number, since it is larger than the sum of its proper divisors (4074913).

288385631 is a wasteful number, since it uses less digits than its factorization.

288385631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14221.

The product of its digits is 276480, while the sum is 44.

The square root of 288385631 is about 16981.9207099786. The cubic root of 288385631 is about 660.6800695945.

The spelling of 288385631 in words is "two hundred eighty-eight million, three hundred eighty-five thousand, six hundred thirty-one".