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3122130331 = 19238238681
BaseRepresentation
bin1011101000010111…
…1110110110011011
322001120211122122201
42322011332312123
522343231132311
61233450031031
7140240445535
oct27205766633
98046748581
103122130331
1113623a7801
12731718477
133a9aa5cc8
14218918855
1513416a9c1
hexba17ed9b

3122130331 has 16 divisors (see below), whose sum is σ = 3433904640. Its totient is φ = 2825444160.

The previous prime is 3122130329. The next prime is 3122130391. The reversal of 3122130331 is 1330312213.

It is a cyclic number.

It is not a de Polignac number, because 3122130331 - 21 = 3122130329 is a prime.

It is a super-2 number, since 2×31221303312 = 19495395607500339122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3122130299 and 3122130308.

It is not an unprimeable number, because it can be changed into a prime (3122130391) 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, 355311 + ... + 363991.

It is an arithmetic number, because the mean of its divisors is an integer number (214619040).

Almost surely, 23122130331 is an apocalyptic number.

3122130331 is a deficient number, since it is larger than the sum of its proper divisors (311774309).

3122130331 is a wasteful number, since it uses less digits than its factorization.

3122130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3122130331 is about 55876.0264424735. The cubic root of 3122130331 is about 1461.5612140223.

Adding to 3122130331 its reverse (1330312213), we get a palindrome (4452442544).

The spelling of 3122130331 in words is "three billion, one hundred twenty-two million, one hundred thirty thousand, three hundred thirty-one".

Divisors: 1 19 23 437 823 8681 15637 18929 164939 199663 359651 3793597 7144463 135744797 164322649 3122130331