289513231 has 16 divisors (see below), whose sum is σ = 338302720. Its totient is φ = 242637120.

The previous prime is 289513229. The next prime is 289513249. The reversal of 289513231 is 132315982.

It is a cyclic number.

It is not a de Polignac number, because 289513231 - 2¹ = 289513229 is a prime.

It is a super-2 number, since 2×289513231² = 167635821848118722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289513201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62971 + ... + 67411.

It is an arithmetic number, because the mean of its divisors is an integer number (21143920).

Almost surely, 2^289513231 is an apocalyptic number.

289513231 is a deficient number, since it is larger than the sum of its proper divisors (48789489).

289513231 is a wasteful number, since it uses less digits than its factorization.

289513231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654.

The product of its digits is 12960, while the sum is 34.

The square root of 289513231 is about 17015.0883335938. The cubic root of 289513231 is about 661.5400453801.

The spelling of 289513231 in words is "two hundred eighty-nine million, five hundred thirteen thousand, two hundred thirty-one".