331243021025 has 48 divisors (see below), whose sum is σ = 471328761600. Its totient is φ = 226215763200.

The previous prime is 331243020991. The next prime is 331243021027. The reversal of 331243021025 is 520120342133.

It is a happy number.

It is not a de Polignac number, because 331243021025 - 2²⁴ = 331226243809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331243020985 and 331243021003.

It is not an unprimeable number, because it can be changed into a prime (331243021027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47664251 + ... + 47671199.

It is an arithmetic number, because the mean of its divisors is an integer number (9819349200).

Almost surely, 2^331243021025 is an apocalyptic number.

331243021025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

331243021025 is a deficient number, since it is larger than the sum of its proper divisors (140085740575).

331243021025 is a wasteful number, since it uses less digits than its factorization.

331243021025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034 (or 8029 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 331243021025 its reverse (520120342133), we get a palindrome (851363363158).

The spelling of 331243021025 in words is "three hundred thirty-one billion, two hundred forty-three million, twenty-one thousand, twenty-five".