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12372805631 = 59960134369
BaseRepresentation
bin10111000010111101…
…00000011111111111
31011221021121122112102
423201132200133333
5200314414240011
65403424055315
7615416053424
oct134136403777
934837548472
1012372805631
11527a142aaa
12249376453b
131222474184
14855343d4b
154c636173b
hex2e17a07ff

12372805631 has 8 divisors (see below), whose sum is σ = 12414444000. Its totient is φ = 12331238400.

The previous prime is 12372805573. The next prime is 12372805637. The reversal of 12372805631 is 13650827321.

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

It is a cyclic number.

It is not a de Polignac number, because 12372805631 - 210 = 12372804607 is a prime.

It is a super-2 number, since 2×123728056312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12372805637) 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, 342815 + ... + 377183.

It is an arithmetic number, because the mean of its divisors is an integer number (1551805500).

Almost surely, 212372805631 is an apocalyptic number.

12372805631 is a deficient number, since it is larger than the sum of its proper divisors (41638369).

12372805631 is an equidigital number, since it uses as much as digits as its factorization.

12372805631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35569.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 12372805631 in words is "twelve billion, three hundred seventy-two million, eight hundred five thousand, six hundred thirty-one".

Divisors: 1 599 601 34369 359999 20587031 20655769 12372805631