289311312 has 40 divisors (see below), whose sum is σ = 761495904. Its totient is φ = 94616704.

The previous prime is 289311311. The next prime is 289311331. The reversal of 289311312 is 213113982.

It is a super-2 number, since 2×289311312² = 167402070502322688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 289311312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289311311) 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, 54318 + ... + 59405.

Almost surely, 2^289311312 is an apocalyptic number.

It is an amenable number.

289311312 is an abundant number, since it is smaller than the sum of its proper divisors (472184592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289311312 is a wasteful number, since it uses less digits than its factorization.

289311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113787 (or 113781 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 289311312 is about 17009.1537708376. The cubic root of 289311312 is about 661.3862141024.

The spelling of 289311312 in words is "two hundred eighty-nine million, three hundred eleven thousand, three hundred twelve".