331400321021 has 64 divisors (see below), whose sum is σ = 447418736640. Its totient is φ = 237634560000.

The previous prime is 331400321009. The next prime is 331400321029. The reversal of 331400321021 is 120123004133.

It is a cyclic number.

It is not a de Polignac number, because 331400321021 - 2¹⁴ = 331400304637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331400320984 and 331400321002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331400321029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34693196 + ... + 34702746.

It is an arithmetic number, because the mean of its divisors is an integer number (6990917760).

Almost surely, 2^331400321021 is an apocalyptic number.

It is an amenable number.

331400321021 is a deficient number, since it is larger than the sum of its proper divisors (116018415619).

331400321021 is a wasteful number, since it uses less digits than its factorization.

331400321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 331400321021 its reverse (120123004133), we get a palindrome (451523325154).

The spelling of 331400321021 in words is "three hundred thirty-one billion, four hundred million, three hundred twenty-one thousand, twenty-one".