331560487 has 4 divisors (see below), whose sum is σ = 339271240. Its totient is φ = 323849736.

The previous prime is 331560473. The next prime is 331560491. The reversal of 331560487 is 784065133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 331560487 - 2¹⁵ = 331527719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331500487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3855312 + ... + 3855397.

It is an arithmetic number, because the mean of its divisors is an integer number (84817810).

Almost surely, 2^331560487 is an apocalyptic number.

331560487 is a deficient number, since it is larger than the sum of its proper divisors (7710753).

331560487 is an equidigital number, since it uses as much as digits as its factorization.

331560487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710752.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 331560487 is about 18208.8024592503. The cubic root of 331560487 is about 692.1298656723.

The spelling of 331560487 in words is "three hundred thirty-one million, five hundred sixty thousand, four hundred eighty-seven".