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3130323431 = 28559109609
BaseRepresentation
bin1011101010010100…
…1111000111100111
322002011020220110212
42322211033013213
522402330322211
61234341410035
7140400211244
oct27245170747
98064226425
103130323431
111366a93364
1273440991b
133ab6b42b1
14219a4c5cb
15134c3838b
hexba94f1e7

3130323431 has 4 divisors (see below), whose sum is σ = 3130461600. Its totient is φ = 3130185264.

The previous prime is 3130323419. The next prime is 3130323433. The reversal of 3130323431 is 1343230313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343230313 = 10313041071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3130323431 is a prime.

It is a super-2 number, since 2×31303234312 = 19597849565335223522, 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 = 3130323397 and 3130323406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130323433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26246 + ... + 83363.

It is an arithmetic number, because the mean of its divisors is an integer number (782615400).

Almost surely, 23130323431 is an apocalyptic number.

3130323431 is a deficient number, since it is larger than the sum of its proper divisors (138169).

3130323431 is a wasteful number, since it uses less digits than its factorization.

3130323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138168.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 3130323431 is about 55949.2933914272. The cubic root of 3130323431 is about 1462.8385745067.

Adding to 3130323431 its reverse (1343230313), we get a palindrome (4473553744).

The spelling of 3130323431 in words is "three billion, one hundred thirty million, three hundred twenty-three thousand, four hundred thirty-one".

Divisors: 1 28559 109609 3130323431