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3130312223 = 18471694809
BaseRepresentation
bin1011101010010100…
…1100011000011111
322002011020100002202
42322211030120133
522402324442343
61234341242115
7140400133463
oct27245143037
98064210082
103130312223
111366a859a5
1273440333b
133ab6ac16c
14219a484a3
15134c34db8
hexba94c61f

3130312223 has 4 divisors (see below), whose sum is σ = 3132008880. Its totient is φ = 3128615568.

The previous prime is 3130312217. The next prime is 3130312247. The reversal of 3130312223 is 3222130313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3222130313 = 13732346781.

It is a cyclic number.

It is not a de Polignac number, because 3130312223 - 212 = 3130308127 is a prime.

It is a super-2 number, since 2×31303122232 = 19597709226926403458, 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 = 3130312195 and 3130312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130312253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845558 + ... + 849251.

It is an arithmetic number, because the mean of its divisors is an integer number (783002220).

Almost surely, 23130312223 is an apocalyptic number.

3130312223 is a deficient number, since it is larger than the sum of its proper divisors (1696657).

3130312223 is a wasteful number, since it uses less digits than its factorization.

3130312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696656.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 3130312223 is about 55949.1932292147. The cubic root of 3130312223 is about 1462.8368286259.

Adding to 3130312223 its reverse (3222130313), we get a palindrome (6352442536).

The spelling of 3130312223 in words is "three billion, one hundred thirty million, three hundred twelve thousand, two hundred twenty-three".

Divisors: 1 1847 1694809 3130312223