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3130311031 = 17184135943
BaseRepresentation
bin1011101010010100…
…1100000101110111
322002011020021110121
42322211030011313
522402324423111
61234341232411
7140400130141
oct27245140567
98064207417
103130311031
111366a85011
12734402707
133ab6ab763
14219a47c91
15134c34871
hexba94c177

3130311031 has 4 divisors (see below), whose sum is σ = 3314446992. Its totient is φ = 2946175072.

The previous prime is 3130310999. The next prime is 3130311097. The reversal of 3130311031 is 1301130313.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3130311031 - 25 = 3130310999 is a prime.

It is a super-2 number, since 2×31303110312 = 19597694301600565922, 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 = 3130310996 and 3130311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130321031) 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, 92067955 + ... + 92067988.

It is an arithmetic number, because the mean of its divisors is an integer number (828611748).

Almost surely, 23130311031 is an apocalyptic number.

3130311031 is a deficient number, since it is larger than the sum of its proper divisors (184135961).

3130311031 is a wasteful number, since it uses less digits than its factorization.

3130311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184135960.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 3130311031 is about 55949.1825766919. The cubic root of 3130311031 is about 1462.8366429467.

Adding to 3130311031 its reverse (1301130313), we get a palindrome (4431441344).

The spelling of 3130311031 in words is "three billion, one hundred thirty million, three hundred eleven thousand, thirty-one".

Divisors: 1 17 184135943 3130311031