Base | Representation |
---|---|
bin | 11011111101111111… |
… | …100110011101011111 |
3 | 2212111220211120001120 |
4 | 123331333212131133 |
5 | 443000431041111 |
6 | 21443542542023 |
7 | 2112125145324 |
oct | 337577463537 |
9 | 85456746046 |
10 | 30031112031 |
11 | 11810863a58 |
12 | 59a1437913 |
13 | 2aa796929b |
14 | 164c626b4b |
15 | bab722406 |
hex | 6fdfe675f |
30031112031 has 8 divisors (see below), whose sum is σ = 40067338800. Its totient is φ = 20007813312.
The previous prime is 30031112011. The next prime is 30031112053. The reversal of 30031112031 is 13021113003.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30031112031 - 26 = 30031111967 is a prime.
It is a super-2 number, since 2×300311120312 (a number of 22 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 30031112031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30031112011) 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, 3226590 + ... + 3235883.
It is an arithmetic number, because the mean of its divisors is an integer number (5008417350).
Almost surely, 230031112031 is an apocalyptic number.
30031112031 is a deficient number, since it is larger than the sum of its proper divisors (10036226769).
30031112031 is a wasteful number, since it uses less digits than its factorization.
30031112031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6464025.
The product of its (nonzero) digits is 54, while the sum is 15.
Adding to 30031112031 its reverse (13021113003), we get a palindrome (43052225034).
The spelling of 30031112031 in words is "thirty billion, thirty-one million, one hundred twelve thousand, thirty-one".
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