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12131230270 = 251213123027
BaseRepresentation
bin10110100110001001…
…11110001000111110
31011022110001100102211
423103010332020332
5144321043332040
65323434211034
7606423520165
oct132304761076
934273040384
1012131230270
115165843945
122426883a7a
1311b43c1283
1483121c3dc
154b00438ea
hex2d313e23e

12131230270 has 8 divisors (see below), whose sum is σ = 21836214504. Its totient is φ = 4852492104.

The previous prime is 12131230169. The next prime is 12131230271. The reversal of 12131230270 is 7203213121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131230271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606561504 + ... + 606561523.

It is an arithmetic number, because the mean of its divisors is an integer number (2729526813).

Almost surely, 212131230270 is an apocalyptic number.

12131230270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131230270 is a deficient number, since it is larger than the sum of its proper divisors (9704984234).

12131230270 is a wasteful number, since it uses less digits than its factorization.

12131230270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213123034.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 12131230270 its reverse (7203213121), we get a palindrome (19334443391).

The spelling of 12131230270 in words is "twelve billion, one hundred thirty-one million, two hundred thirty thousand, two hundred seventy".

Divisors: 1 2 5 10 1213123027 2426246054 6065615135 12131230270