Base | Representation |
---|---|
bin | 111010111001… |
… | …1001001001011 |
3 | 2011002212211222 |
4 | 1311303021023 |
5 | 30401132311 |
6 | 3021512255 |
7 | 523323056 |
oct | 165631113 |
9 | 64085758 |
10 | 30880331 |
11 | 16481939 |
12 | a41268b |
13 | 65228b1 |
14 | 415ba9d |
15 | 2a9eadb |
hex | 1d7324b |
30880331 has 8 divisors (see below), whose sum is σ = 32011200. Its totient is φ = 29753920.
The previous prime is 30880319. The next prime is 30880337. The reversal of 30880331 is 13308803.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30880331 - 218 = 30618187 is a prime.
It is a super-2 number, since 2×308803312 = 1907189685339122, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 30880331.
It is not an unprimeable number, because it can be changed into a prime (30880337) 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, 20111 + ... + 21591.
It is an arithmetic number, because the mean of its divisors is an integer number (4001400).
Almost surely, 230880331 is an apocalyptic number.
30880331 is a deficient number, since it is larger than the sum of its proper divisors (1130869).
30880331 is a wasteful number, since it uses less digits than its factorization.
30880331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2229.
The product of its (nonzero) digits is 1728, while the sum is 26.
The square root of 30880331 is about 5557.0073780768. The cubic root of 30880331 is about 313.7333226057.
The spelling of 30880331 in words is "thirty million, eight hundred eighty thousand, three hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •