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313125212613 = 3988071056353
BaseRepresentation
bin1001000111001111011…
…01111001000111000101
31002221020020022220121210
410203213231321013011
520112240023300423
6355503040002033
731423351251333
oct4434755710705
91087206286553
10313125212613
11110883023854
1250829000319
13236b2130cc5
1411226382b53
158229ae5b93
hex48e7b791c5

313125212613 has 8 divisors (see below), whose sum is σ = 417504904128. Its totient is φ = 208747831424.

The previous prime is 313125212597. The next prime is 313125212633. The reversal of 313125212613 is 316212521313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313125212613 - 24 = 313125212597 is a prime.

It is a super-3 number, since 3×3131252126133 (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313125212633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231756 + ... + 824597.

It is an arithmetic number, because the mean of its divisors is an integer number (52188113016).

Almost surely, 2313125212613 is an apocalyptic number.

It is an amenable number.

313125212613 is a deficient number, since it is larger than the sum of its proper divisors (104379691515).

313125212613 is a wasteful number, since it uses less digits than its factorization.

313125212613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155163.

The product of its digits is 6480, while the sum is 30.

Adding to 313125212613 its reverse (316212521313), we get a palindrome (629337733926).

The spelling of 313125212613 in words is "three hundred thirteen billion, one hundred twenty-five million, two hundred twelve thousand, six hundred thirteen".

Divisors: 1 3 98807 296421 1056353 3169059 104375070871 313125212613