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12131835994 = 219793065143
BaseRepresentation
bin10110100110001110…
…10010000001011010
31011022111012010100001
423103013102001122
5144321222222434
65323455203214
7606431622145
oct132307220132
934274163301
1012131835994
115166117a43
122426b1650a
1311b4573ba5
1483133905c
154b0113114
hex2d31d205a

12131835994 has 8 divisors (see below), whose sum is σ = 18206955360. Its totient is φ = 6062850876.

The previous prime is 12131835941. The next prime is 12131835997. The reversal of 12131835994 is 49953813121.

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

It is not an unprimeable number, because it can be changed into a prime (12131835997) 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, 1528614 + ... + 1536529.

It is an arithmetic number, because the mean of its divisors is an integer number (2275869420).

Almost surely, 212131835994 is an apocalyptic number.

12131835994 is a deficient number, since it is larger than the sum of its proper divisors (6075119366).

12131835994 is a wasteful number, since it uses less digits than its factorization.

12131835994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067124.

The product of its digits is 233280, while the sum is 46.

The spelling of 12131835994 in words is "twelve billion, one hundred thirty-one million, eight hundred thirty-five thousand, nine hundred ninety-four".

Divisors: 1 2 1979 3958 3065143 6130286 6065917997 12131835994