331144525 has 12 divisors (see below), whose sum is σ = 415235700. Its totient is φ = 261937280.

The previous prime is 331144459. The next prime is 331144543. The reversal of 331144525 is 525441133.

It can be written as a sum of positive squares in 6 ways, for example, as 106564329 + 224580196 = 10323^2 + 14986^2 .

It is not a de Polignac number, because 331144525 - 2¹⁹ = 330620237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331144493 and 331144502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72190 + ... + 76639.

It is an arithmetic number, because the mean of its divisors is an integer number (34602975).

Almost surely, 2^331144525 is an apocalyptic number.

It is an amenable number.

331144525 is a deficient number, since it is larger than the sum of its proper divisors (84091175).

331144525 is a wasteful number, since it uses less digits than its factorization.

331144525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148928 (or 148923 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 331144525 is about 18197.3768714065. The cubic root of 331144525 is about 691.8403054320.

Adding to 331144525 its reverse (525441133), we get a palindrome (856585658).

The spelling of 331144525 in words is "three hundred thirty-one million, one hundred forty-four thousand, five hundred twenty-five".