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123213031113131 = 1496907119723917
BaseRepresentation
bin11100000000111111000100…
…111100111000000110101011
3121011021001100222200010112122
4130000333010330320012223
5112122210241431110011
61114015141324301455
734644563526055601
oct3400770474700653
9534231328603478
10123213031113131
11362943979a7273
121199b6169a188b
135399c28c2226b
14225d784991871
15e3a0c13693db
hex700fc4f381ab

123213031113131 has 8 divisors (see below), whose sum is σ = 124057923831600. Its totient is φ = 122368377856608.

The previous prime is 123213031113097. The next prime is 123213031113247. The reversal of 123213031113131 is 131311130312321.

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 123213031113131 - 234 = 123195851243947 is a prime.

It is a super-2 number, since 2×1232130311131312 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123213031113131.

It is not an unprimeable number, because it can be changed into a prime (123213031115131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58832816 + ... + 60891101.

It is an arithmetic number, because the mean of its divisors is an integer number (15507240478950).

Almost surely, 2123213031113131 is an apocalyptic number.

123213031113131 is a deficient number, since it is larger than the sum of its proper divisors (844892718469).

123213031113131 is a wasteful number, since it uses less digits than its factorization.

123213031113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119730973.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 123213031113131 its reverse (131311130312321), we get a palindrome (254524161425452).

The spelling of 123213031113131 in words is "one hundred twenty-three trillion, two hundred thirteen billion, thirty-one million, one hundred thirteen thousand, one hundred thirty-one".

Divisors: 1 149 6907 1029143 119723917 17838863633 826933094719 123213031113131