Base | Representation |
---|---|
bin | 1101101111001111001000… |
… | …01011000111101010010101 |
3 | 10221222002011001112222012201 |
4 | 12313213210023013222111 |
5 | 12424431230234103411 |
6 | 144130234015444501 |
7 | 6235424134350100 |
oct | 667474413075225 |
9 | 127862131488181 |
10 | 30210333112981 |
11 | 9698148507a4a |
12 | 347ab6b526731 |
13 | 13b1a8c46b558 |
14 | 76628b943737 |
15 | 375c904ab3c1 |
hex | 1b79e42c7a95 |
30210333112981 has 6 divisors (see below), whose sum is σ = 35142632396790. Its totient is φ = 25894571239656.
The previous prime is 30210333112937. The next prime is 30210333113047. The reversal of 30210333112981 is 18921133301203.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 30170950710481 + 39382402500 = 5492809^2 + 198450^2 .
It is not a de Polignac number, because 30210333112981 - 221 = 30210331015829 is a prime.
It is a super-2 number, since 2×302103331129812 (a number of 28 digits) 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 30210333112981.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30210333112081) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308268705186 + ... + 308268705283.
It is an arithmetic number, because the mean of its divisors is an integer number (5857105399465).
Almost surely, 230210333112981 is an apocalyptic number.
It is an amenable number.
30210333112981 is a deficient number, since it is larger than the sum of its proper divisors (4932299283809).
30210333112981 is an equidigital number, since it uses as much as digits as its factorization.
30210333112981 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 616537410483 (or 616537410476 counting only the distinct ones).
The product of its (nonzero) digits is 23328, while the sum is 37.
The spelling of 30210333112981 in words is "thirty trillion, two hundred ten billion, three hundred thirty-three million, one hundred twelve thousand, nine hundred eighty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •