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12312002570 = 257175885751
BaseRepresentation
bin10110111011101101…
…00100000000001010
31011210001012112102012
423131312210000022
5200203333040240
65353412535522
7614050203140
oct133566440012
934701175365
1012312002570
11524889383a
1224773215a2
1312129a582a
1484b237590
154c0d50b65
hex2ddda400a

12312002570 has 16 divisors (see below), whose sum is σ = 25327548288. Its totient is φ = 4221258000.

The previous prime is 12312002569. The next prime is 12312002579. The reversal of 12312002570 is 7520021321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12312002579) 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, 87942806 + ... + 87942945.

It is an arithmetic number, because the mean of its divisors is an integer number (1582971768).

Almost surely, 212312002570 is an apocalyptic number.

12312002570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12312002570 is an abundant number, since it is smaller than the sum of its proper divisors (13015545718).

12312002570 is a wasteful number, since it uses less digits than its factorization.

12312002570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175885765.

The product of its (nonzero) digits is 840, while the sum is 23.

Adding to 12312002570 its reverse (7520021321), we get a palindrome (19832023891).

The spelling of 12312002570 in words is "twelve billion, three hundred twelve million, two thousand, five hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 175885751 351771502 879428755 1231200257 1758857510 2462400514 6156001285 12312002570