Base | Representation |
---|---|
bin | 11101000100111110… |
… | …111100111101111101 |
3 | 2222120220221020220021 |
4 | 131010332330331331 |
5 | 1002420330440123 |
6 | 22202050252141 |
7 | 2153466451534 |
oct | 350476747575 |
9 | 88526836807 |
10 | 31222124413 |
11 | 12272091207 |
12 | 6074287051 |
13 | 2c3763493c |
14 | 172289731b |
15 | c2b084c5d |
hex | 744fbcf7d |
31222124413 has 8 divisors (see below), whose sum is σ = 31439041920. Its totient is φ = 31005954480.
The previous prime is 31222124399. The next prime is 31222124441. The reversal of 31222124413 is 31442122213.
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 31222124413 - 225 = 31188569981 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31222124473) 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, 102945 + ... + 270262.
It is an arithmetic number, because the mean of its divisors is an integer number (3929880240).
Almost surely, 231222124413 is an apocalyptic number.
It is an amenable number.
31222124413 is a deficient number, since it is larger than the sum of its proper divisors (216917507).
31222124413 is a wasteful number, since it uses less digits than its factorization.
31222124413 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 373787.
The product of its digits is 2304, while the sum is 25.
Adding to 31222124413 its reverse (31442122213), we get a palindrome (62664246626).
The spelling of 31222124413 in words is "thirty-one billion, two hundred twenty-two million, one hundred twenty-four thousand, four hundred thirteen".
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