331645053 has 4 divisors (see below), whose sum is σ = 442193408. Its totient is φ = 221096700.

The previous prime is 331645051. The next prime is 331645091. The reversal of 331645053 is 350546133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 331645053 - 2¹ = 331645051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331645053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331645051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55274173 + ... + 55274178.

It is an arithmetic number, because the mean of its divisors is an integer number (110548352).

Almost surely, 2^331645053 is an apocalyptic number.

It is an amenable number.

331645053 is a deficient number, since it is larger than the sum of its proper divisors (110548355).

331645053 is a wasteful number, since it uses less digits than its factorization.

331645053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110548354.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 331645053 is about 18211.1244298643. The cubic root of 331645053 is about 692.1887042865.

The spelling of 331645053 in words is "three hundred thirty-one million, six hundred forty-five thousand, fifty-three".