331520001 has 8 divisors (see below), whose sum is σ = 443363424. Its totient is φ = 220344960.

The previous prime is 331519939. The next prime is 331520027. The reversal of 331520001 is 100025133.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331520001 - 2¹⁴ = 331503617 is a prime.

It is a super-2 number, since 2×331520001² = 219811022126080002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331520041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165936 + ... + 167921.

It is an arithmetic number, because the mean of its divisors is an integer number (55420428).

Almost surely, 2^331520001 is an apocalyptic number.

It is an amenable number.

331520001 is a deficient number, since it is larger than the sum of its proper divisors (111843423).

331520001 is a wasteful number, since it uses less digits than its factorization.

331520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334191.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 331520001 is about 18207.6907102466. The cubic root of 331520001 is about 692.1016931251.

Adding to 331520001 its reverse (100025133), we get a palindrome (431545134).

The spelling of 331520001 in words is "three hundred thirty-one million, five hundred twenty thousand, one".