331648437 has 16 divisors (see below), whose sum is σ = 458115840. Its totient is φ = 213162432.

The previous prime is 331648433. The next prime is 331648451. The reversal of 331648437 is 734846133.

It is not a de Polignac number, because 331648437 - 2² = 331648433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331648395 and 331648404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331648433) 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, 66948 + ... + 71730.

It is an arithmetic number, because the mean of its divisors is an integer number (28632240).

Almost surely, 2^331648437 is an apocalyptic number.

It is an amenable number.

331648437 is a deficient number, since it is larger than the sum of its proper divisors (126467403).

331648437 is a wasteful number, since it uses less digits than its factorization.

331648437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612.

The product of its digits is 145152, while the sum is 39.

The square root of 331648437 is about 18211.2173398705. The cubic root of 331648437 is about 692.1910585692.

The spelling of 331648437 in words is "three hundred thirty-one million, six hundred forty-eight thousand, four hundred thirty-seven".