331120001 has 4 divisors (see below), whose sum is σ = 332058372. Its totient is φ = 330181632.

The previous prime is 331119913. The next prime is 331120007. The reversal of 331120001 is 100021133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106090000 + 225030001 = 10300^2 + 15001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331120007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468656 + ... + 469361.

It is an arithmetic number, because the mean of its divisors is an integer number (83014593).

Almost surely, 2^331120001 is an apocalyptic number.

It is an amenable number.

331120001 is a deficient number, since it is larger than the sum of its proper divisors (938371).

331120001 is an equidigital number, since it uses as much as digits as its factorization.

331120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938370.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 331120001 is about 18196.7030255483. The cubic root of 331120001 is about 691.8232261718.

Adding to 331120001 its reverse (100021133), we get a palindrome (431141134).

The spelling of 331120001 in words is "three hundred thirty-one million, one hundred twenty thousand, one".