Base | Representation |
---|---|
bin | 1100010101110011111… |
… | …0100011110100100111 |
3 | 202021020120102121102122 |
4 | 3011130332203310213 |
5 | 11433200401113111 |
6 | 241221512500155 |
7 | 21213613216160 |
oct | 3053476436447 |
9 | 667216377378 |
10 | 212013301031 |
11 | 81a06a88064 |
12 | 3510a9aa65b |
13 | 16cba15cc1c |
14 | a3937a2767 |
15 | 57ace70cdb |
hex | 315cfa3d27 |
212013301031 has 4 divisors (see below), whose sum is σ = 242300915472. Its totient is φ = 181725686592.
The previous prime is 212013301021. The next prime is 212013301051. The reversal of 212013301031 is 130103310212.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 212013301031 - 226 = 211946192167 is a prime.
It is a super-2 number, since 2×2120133010312 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212013301021) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15143807210 + ... + 15143807223.
It is an arithmetic number, because the mean of its divisors is an integer number (60575228868).
Almost surely, 2212013301031 is an apocalyptic number.
212013301031 is a deficient number, since it is larger than the sum of its proper divisors (30287614441).
212013301031 is an equidigital number, since it uses as much as digits as its factorization.
212013301031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30287614440.
The product of its (nonzero) digits is 108, while the sum is 17.
Adding to 212013301031 its reverse (130103310212), we get a palindrome (342116611243).
The spelling of 212013301031 in words is "two hundred twelve billion, thirteen million, three hundred one thousand, thirty-one".
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