331143025 has 24 divisors (see below), whose sum is σ = 429972480. Its totient is φ = 252651840.

The previous prime is 331142971. The next prime is 331143047. The reversal of 331143025 is 520341133.

It is a de Polignac number, because none of the positive numbers 2^k-331143025 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331142987 and 331143005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57424 + ... + 62926.

It is an arithmetic number, because the mean of its divisors is an integer number (17915520).

Almost surely, 2^331143025 is an apocalyptic number.

It is an amenable number.

331143025 is a deficient number, since it is larger than the sum of its proper divisors (98829455).

331143025 is a wasteful number, since it uses less digits than its factorization.

331143025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 331143025 is about 18197.3356566284. The cubic root of 331143025 is about 691.8392608106.

Adding to 331143025 its reverse (520341133), we get a palindrome (851484158).

The spelling of 331143025 in words is "three hundred thirty-one million, one hundred forty-three thousand, twenty-five".