100120331 has 8 divisors (see below), whose sum is σ = 101023104. Its totient is φ = 99221760.

The previous prime is 100120289. The next prime is 100120343. The reversal of 100120331 is 133021001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100120331 is a prime.

It is a super-2 number, since 2×100120331² = 20048161359099122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120351) 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, 63110 + ... + 64676.

It is an arithmetic number, because the mean of its divisors is an integer number (12627888).

Almost surely, 2^100120331 is an apocalyptic number.

100120331 is a deficient number, since it is larger than the sum of its proper divisors (902773).

100120331 is a wasteful number, since it uses less digits than its factorization.

100120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

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

The square root of 100120331 is about 10006.0147411444. The cubic root of 100120331 is about 464.3449844108.

Adding to 100120331 its reverse (133021001), we get a palindrome (233141332).

The spelling of 100120331 in words is "one hundred million, one hundred twenty thousand, three hundred thirty-one".