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313030321313 = 1205512596663
BaseRepresentation
bin1001000111000100000…
…11111010010010100001
31002220222121202221020012
410203202003322102201
520112041230240223
6355445410054305
731421116554323
oct4434203722241
91086877687205
10313030321313
11110834501596
125080127a395
13236985888c8
1411217921613
1582215eec78
hex48e20fa4a1

313030321313 has 4 divisors (see below), whose sum is σ = 313033038528. Its totient is φ = 313027604100.

The previous prime is 313030321301. The next prime is 313030321327. The reversal of 313030321313 is 313123030313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313123030313 = 2002731563481.

It is a cyclic number.

It is not a de Polignac number, because 313030321313 - 216 = 313030255777 is a prime.

It is a super-2 number, since 2×3130303213132 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313030321363) 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, 1177781 + ... + 1418882.

It is an arithmetic number, because the mean of its divisors is an integer number (78258259632).

Almost surely, 2313030321313 is an apocalyptic number.

It is an amenable number.

313030321313 is a deficient number, since it is larger than the sum of its proper divisors (2717215).

313030321313 is a wasteful number, since it uses less digits than its factorization.

313030321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717214.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 313030321313 its reverse (313123030313), we get a palindrome (626153351626).

The spelling of 313030321313 in words is "three hundred thirteen billion, thirty million, three hundred twenty-one thousand, three hundred thirteen".

Divisors: 1 120551 2596663 313030321313