331400445 has 16 divisors (see below), whose sum is σ = 553295232. Its totient is φ = 169062080.

The previous prime is 331400393. The next prime is 331400473. The reversal of 331400445 is 544004133.

It is not a de Polignac number, because 331400445 - 2⁸ = 331400189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479946 + ... + 480635.

It is an arithmetic number, because the mean of its divisors is an integer number (34580952).

Almost surely, 2^331400445 is an apocalyptic number.

It is an amenable number.

331400445 is a deficient number, since it is larger than the sum of its proper divisors (221894787).

331400445 is a wasteful number, since it uses less digits than its factorization.

331400445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960612.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 331400445 is about 18204.4072960369. The cubic root of 331400445 is about 692.0184856178.

Adding to 331400445 its reverse (544004133), we get a palindrome (875404578).

The spelling of 331400445 in words is "three hundred thirty-one million, four hundred thousand, four hundred forty-five".