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3130312303 = 5995225897
BaseRepresentation
bin1011101010010100…
…1100011001101111
322002011020100012201
42322211030121233
522402324443203
61234341242331
7140400133636
oct27245143157
98064210181
103130312303
111366a85a68
127344033a7
133ab6ac201
14219a4851d
15134c34e1d
hexba94c66f

3130312303 has 4 divisors (see below), whose sum is σ = 3135538800. Its totient is φ = 3125085808.

The previous prime is 3130312279. The next prime is 3130312309. The reversal of 3130312303 is 3032130313.

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

It is a cyclic number.

It is not a de Polignac number, because 3130312303 - 225 = 3096757871 is a prime.

It is a super-2 number, since 2×31303123032 = 19597710228626327618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130312309) 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, 2612350 + ... + 2613547.

It is an arithmetic number, because the mean of its divisors is an integer number (783884700).

Almost surely, 23130312303 is an apocalyptic number.

3130312303 is a deficient number, since it is larger than the sum of its proper divisors (5226497).

3130312303 is an equidigital number, since it uses as much as digits as its factorization.

3130312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226496.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 3130312303 is about 55949.1939441490. The cubic root of 3130312303 is about 1462.8368410876.

Adding to 3130312303 its reverse (3032130313), we get a palindrome (6162442616).

The spelling of 3130312303 in words is "three billion, one hundred thirty million, three hundred twelve thousand, three hundred three".

Divisors: 1 599 5225897 3130312303