331320101 has 4 divisors (see below), whose sum is σ = 378651552. Its totient is φ = 283988652.

The previous prime is 331320079. The next prime is 331320103. The reversal of 331320101 is 101023133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101023133 = 19 ⋅5317007.

It is a cyclic number.

It is not a de Polignac number, because 331320101 - 2¹⁰ = 331319077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23665715 + ... + 23665728.

It is an arithmetic number, because the mean of its divisors is an integer number (94662888).

Almost surely, 2^331320101 is an apocalyptic number.

It is an amenable number.

331320101 is a deficient number, since it is larger than the sum of its proper divisors (47331451).

331320101 is an equidigital number, since it uses as much as digits as its factorization.

331320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47331450.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 331320101 is about 18202.2004439024. The cubic root of 331320101 is about 691.9625572811.

Adding to 331320101 its reverse (101023133), we get a palindrome (432343234).

The spelling of 331320101 in words is "three hundred thirty-one million, three hundred twenty thousand, one hundred one".