Base | Representation |
---|---|
bin | 1011101000010111… |
… | …1110110001101111 |
3 | 22001120211122020121 |
4 | 2322011332301233 |
5 | 22343231130111 |
6 | 1233450025411 |
7 | 140240444626 |
oct | 27205766157 |
9 | 8046748217 |
10 | 3122130031 |
11 | 13623a7559 |
12 | 731718267 |
13 | 3a9aa5b27 |
14 | 2189186bd |
15 | 13416a871 |
hex | ba17ec6f |
3122130031 has 4 divisors (see below), whose sum is σ = 3129084000. Its totient is φ = 3115176064.
The previous prime is 3122129987. The next prime is 3122130049. The reversal of 3122130031 is 1300312213.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300312213 = 3407 ⋅381659.
It is a cyclic number.
It is not a de Polignac number, because 3122130031 - 213 = 3122121839 is a prime.
It is a super-2 number, since 2×31221300312 = 19495391860944121922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 3122129987 and 3122130014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3122130091) 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, 3476311 + ... + 3477208.
It is an arithmetic number, because the mean of its divisors is an integer number (782271000).
Almost surely, 23122130031 is an apocalyptic number.
3122130031 is a deficient number, since it is larger than the sum of its proper divisors (6953969).
3122130031 is an equidigital number, since it uses as much as digits as its factorization.
3122130031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6953968.
The product of its (nonzero) digits is 108, while the sum is 16.
The square root of 3122130031 is about 55876.0237579590. The cubic root of 3122130031 is about 1461.5611672094.
Adding to 3122130031 its reverse (1300312213), we get a palindrome (4422442244).
The spelling of 3122130031 in words is "three billion, one hundred twenty-two million, one hundred thirty thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •