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312124421213 = 11148720999091
BaseRepresentation
bin1001000101011000001…
…00001011010001011101
31002211122111011102220122
410202230010023101131
520103212322434323
6355215445324325
731356506543213
oct4425404132135
91084574142818
10312124421213
1111040a10a420
12505a9a066a5
13235829a7847
141116d4aacb3
1581bbd09ec8
hex48ac10b45d

312124421213 has 16 divisors (see below), whose sum is σ = 340928179200. Its totient is φ = 283392385200.

The previous prime is 312124421149. The next prime is 312124421221.

It is a happy number.

312124421213 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 312124421213 - 26 = 312124421149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312124421263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34328798 + ... + 34337888.

It is an arithmetic number, because the mean of its divisors is an integer number (21308011200).

Almost surely, 2312124421213 is an apocalyptic number.

It is an amenable number.

312124421213 is a deficient number, since it is larger than the sum of its proper divisors (28803757987).

312124421213 is a wasteful number, since it uses less digits than its factorization.

312124421213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12688.

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 312124 and 421213, that added together give a palindrome (733337).

The spelling of 312124421213 in words is "three hundred twelve billion, one hundred twenty-four million, four hundred twenty-one thousand, two hundred thirteen".

Divisors: 1 11 1487 2099 9091 16357 23089 100001 3121213 13518317 19082009 34333343 148701487 209902099 28374947383 312124421213