331440897 has 8 divisors (see below), whose sum is σ = 442104256. Its totient is φ = 220869072.

The previous prime is 331440887. The next prime is 331440899. The reversal of 331440897 is 798044133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331440897 - 2⁴ = 331440881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331440899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13933 + ... + 29274.

It is an arithmetic number, because the mean of its divisors is an integer number (55263032).

Almost surely, 2^331440897 is an apocalyptic number.

It is an amenable number.

331440897 is a deficient number, since it is larger than the sum of its proper divisors (110663359).

331440897 is a wasteful number, since it uses less digits than its factorization.

331440897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45767.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 331440897 is about 18205.5183117647. The cubic root of 331440897 is about 692.0466412758.

The spelling of 331440897 in words is "three hundred thirty-one million, four hundred forty thousand, eight hundred ninety-seven".