Base | Representation |
---|---|
bin | 11100000011010111… |
… | …010000101000000011 |
3 | 2212202012100111200212 |
4 | 130003113100220003 |
5 | 443142011401011 |
6 | 21500521504335 |
7 | 2114300656001 |
oct | 340327205003 |
9 | 85665314625 |
10 | 30121200131 |
11 | 118576a5530 |
12 | 5a076420ab |
13 | 2ac051c359 |
14 | 165a597a71 |
15 | bb45ba08b |
hex | 7035d0a03 |
30121200131 has 8 divisors (see below), whose sum is σ = 34288164864. Its totient is φ = 26192347720.
The previous prime is 30121200079. The next prime is 30121200149. The reversal of 30121200131 is 13100212103.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30121200131 - 234 = 12941330947 is a prime.
It is a super-2 number, since 2×301212001312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30111200131) 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, 59527811 + ... + 59528316.
It is an arithmetic number, because the mean of its divisors is an integer number (4286020608).
Almost surely, 230121200131 is an apocalyptic number.
30121200131 is a deficient number, since it is larger than the sum of its proper divisors (4166964733).
30121200131 is a wasteful number, since it uses less digits than its factorization.
30121200131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 119056161.
The product of its (nonzero) digits is 36, while the sum is 14.
Adding to 30121200131 its reverse (13100212103), we get a palindrome (43221412234).
The spelling of 30121200131 in words is "thirty billion, one hundred twenty-one million, two hundred thousand, one hundred thirty-one".
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