331020100 has 18 divisors (see below), whose sum is σ = 718313834. Its totient is φ = 132408000.

The previous prime is 331020097. The next prime is 331020119. The reversal of 331020100 is 1020133.

It can be written as a sum of positive squares in 3 ways, for example, as 56190016 + 274830084 = 7496^2 + 16578^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1655001 + ... + 1655200.

Almost surely, 2^331020100 is an apocalyptic number.

It is an amenable number.

331020100 is an abundant number, since it is smaller than the sum of its proper divisors (387293734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331020100 is a wasteful number, since it uses less digits than its factorization.

331020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310215 (or 3310208 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 331020100 is about 18193.9577882329. The cubic root of 331020100 is about 691.7536433582.

Adding to 331020100 its reverse (1020133), we get a palindrome (332040233).

The spelling of 331020100 in words is "three hundred thirty-one million, twenty thousand, one hundred".