331320112131021 has 32 divisors (see below), whose sum is σ = 482847374163840. Its totient is φ = 200844074306304.

The previous prime is 331320112131013. The next prime is 331320112131061. The reversal of 331320112131021 is 120131211023133.

It is not a de Polignac number, because 331320112131021 - 2³ = 331320112131013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331320112130982 and 331320112131000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320112131011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270275551 + ... + 271498643.

It is an arithmetic number, because the mean of its divisors is an integer number (15088980442620).

Almost surely, 2^{331320112131021} is an apocalyptic number.

It is an amenable number.

331320112131021 is a deficient number, since it is larger than the sum of its proper divisors (151527262032819).

331320112131021 is a wasteful number, since it uses less digits than its factorization.

331320112131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326845.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 331320112131021 its reverse (120131211023133), we get a palindrome (451451323154154).

The spelling of 331320112131021 in words is "three hundred thirty-one trillion, three hundred twenty billion, one hundred twelve million, one hundred thirty-one thousand, twenty-one".