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12131344302 = 2371126258321
BaseRepresentation
bin10110100110001010…
…11001111110101110
31011022110021010212020
423103011121332232
5144321111004202
65323440451010
7606424503510
oct132305317656
934273233766
1012131344302
115165911590
122426919a66
1311b443114c
1483124bbb0
154b00675bc
hex2d3159fae

12131344302 has 32 divisors (see below), whose sum is σ = 30249586944. Its totient is φ = 3150998400.

The previous prime is 12131344283. The next prime is 12131344307. The reversal of 12131344302 is 20344313121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131344307) 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, 13128699 + ... + 13129622.

It is an arithmetic number, because the mean of its divisors is an integer number (945299592).

Almost surely, 212131344302 is an apocalyptic number.

12131344302 is an abundant number, since it is smaller than the sum of its proper divisors (18118242642).

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

12131344302 is a wasteful number, since it uses less digits than its factorization.

12131344302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26258344.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12131344302 its reverse (20344313121), we get a palindrome (32475657423).

The spelling of 12131344302 in words is "twelve billion, one hundred thirty-one million, three hundred forty-four thousand, three hundred two".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 66 77 154 231 462 26258321 52516642 78774963 157549926 183808247 288841531 367616494 551424741 577683062 866524593 1102849482 1733049186 2021890717 4043781434 6065672151 12131344302