331859089 has 3 divisors (see below), whose sum is σ = 331877307. Its totient is φ = 331840872.

The previous prime is 331859083. The next prime is 331859131. The reversal of 331859089 is 980958133.

The square root of 331859089 is 18217.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 75603025 + 256256064 = 8695^2 + 16008^2 .

It is not a de Polignac number, because 331859089 - 2⁹ = 331858577 is a prime.

It is a super-2 number, since 2×331859089² = 220260909903819842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331859083) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9109 + ... + 27325.

It is an arithmetic number, because the mean of its divisors is an integer number (110625769).

Almost surely, 2^331859089 is an apocalyptic number.

331859089 is the 18217-th square number.

331859089 is the 9109-th centered octagonal number.

It is an amenable number.

331859089 is a deficient number, since it is larger than the sum of its proper divisors (18218).

331859089 is an frugal number, since it uses more digits than its factorization.

331859089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36434 (or 18217 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The cubic root of 331859089 is about 692.3375797585.

The spelling of 331859089 in words is "three hundred thirty-one million, eight hundred fifty-nine thousand, eighty-nine".