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31104203214 = 2373123889557
BaseRepresentation
bin11100111101111101…
…000111100111001110
32222021201001020102110
4130331331013213032
51002200134000324
622142235004450
72150535236130
oct347575074716
988251036373
1031104203214
111221156a277
126040899726
132c19087c96
141710d5d050
15c20a40329
hex73df479ce

31104203214 has 32 divisors (see below), whose sum is σ = 73388722176. Its totient is φ = 8600240160.

The previous prime is 31104203201. The next prime is 31104203219. The reversal of 31104203214 is 41230240113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104203219) 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 15 ways as a sum of consecutive naturals, for example, 11943477 + ... + 11946080.

It is an arithmetic number, because the mean of its divisors is an integer number (2293397568).

Almost surely, 231104203214 is an apocalyptic number.

31104203214 is an abundant number, since it is smaller than the sum of its proper divisors (42284518962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31104203214 is a wasteful number, since it uses less digits than its factorization.

31104203214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23889600.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31104203214 its reverse (41230240113), we get a palindrome (72334443327).

The spelling of 31104203214 in words is "thirty-one billion, one hundred four million, two hundred three thousand, two hundred fourteen".

Divisors: 1 2 3 6 7 14 21 31 42 62 93 186 217 434 651 1302 23889557 47779114 71668671 143337342 167226899 334453798 501680697 740576267 1003361394 1481152534 2221728801 4443457602 5184033869 10368067738 15552101607 31104203214