Base | Representation |
---|---|
bin | 100100011010110… |
… | …0111000001100111 |
3 | 10011011102200201220 |
4 | 1020311213001213 |
5 | 10000313404111 |
6 | 321131551423 |
7 | 42165640131 |
oct | 11065470147 |
9 | 3134380656 |
10 | 1222013031 |
11 | 577881528 |
12 | 2a12bb573 |
13 | 166230c45 |
14 | b8420051 |
15 | 72437e06 |
hex | 48d67067 |
1222013031 has 16 divisors (see below), whose sum is σ = 1641446400. Its totient is φ = 808647840.
The previous prime is 1222012969. The next prime is 1222013053. The reversal of 1222013031 is 1303102221.
It is not a de Polignac number, because 1222013031 - 27 = 1222012903 is a prime.
It is a super-2 number, since 2×12220130312 = 2986631695867613922, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 1222013031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1222013231) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274201 + ... + 278621.
It is an arithmetic number, because the mean of its divisors is an integer number (102590400).
Almost surely, 21222013031 is an apocalyptic number.
1222013031 is a deficient number, since it is larger than the sum of its proper divisors (419433369).
1222013031 is a wasteful number, since it uses less digits than its factorization.
1222013031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5086.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 1222013031 is about 34957.3029709101. The cubic root of 1222013031 is about 1069.1171076066.
Adding to 1222013031 its reverse (1303102221), we get a palindrome (2525115252).
The spelling of 1222013031 in words is "one billion, two hundred twenty-two million, thirteen thousand, thirty-one".
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