Base | Representation |
---|---|
bin | 10010101010100111… |
… | …00000110011000111 |
3 | 221212101111021202111 |
4 | 21111103200303013 |
5 | 131010401104111 |
6 | 4334215121451 |
7 | 503222024656 |
oct | 112523406307 |
9 | 27771437674 |
10 | 10021113031 |
11 | 42827255a6 |
12 | 1b38073287 |
13 | c391a03a7 |
14 | 6b0c9b19d |
15 | 3d9b7da21 |
hex | 2554e0cc7 |
10021113031 has 8 divisors (see below), whose sum is σ = 10266866064. Its totient is φ = 9775423680.
The previous prime is 10021113013. The next prime is 10021113061. The reversal of 10021113031 is 13031112001.
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 10021113031 - 25 = 10021112999 is a prime.
It is a super-2 number, since 2×100211130312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10021113061) 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, 523725 + ... + 542521.
It is an arithmetic number, because the mean of its divisors is an integer number (1283358258).
Almost surely, 210021113031 is an apocalyptic number.
10021113031 is a deficient number, since it is larger than the sum of its proper divisors (245753033).
10021113031 is a wasteful number, since it uses less digits than its factorization.
10021113031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31841.
The product of its (nonzero) digits is 18, while the sum is 13.
Adding to 10021113031 its reverse (13031112001), we get a palindrome (23052225032).
The spelling of 10021113031 in words is "ten billion, twenty-one million, one hundred thirteen thousand, thirty-one".
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