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12320113031 = 312571546393
BaseRepresentation
bin10110111100101011…
…00000000110000111
31011210121110120212122
423132111200012013
5200212422104111
65354302440155
7614206142612
oct133625400607
934717416778
1012320113031
1152524232a6
122479b9305b
131214585315
1484c349179
154c1903cdb
hex2de560187

12320113031 has 8 divisors (see below), whose sum is σ = 12767028864. Its totient is φ = 11876290560.

The previous prime is 12320112997. The next prime is 12320113067. The reversal of 12320113031 is 13031102321.

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 12320113031 - 230 = 11246371207 is a prime.

It is a super-2 number, since 2×123201130312 (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 (12320113831) 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, 765230 + ... + 781163.

It is an arithmetic number, because the mean of its divisors is an integer number (1595878608).

Almost surely, 212320113031 is an apocalyptic number.

12320113031 is a deficient number, since it is larger than the sum of its proper divisors (446915833).

12320113031 is a wasteful number, since it uses less digits than its factorization.

12320113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546681.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12320113031 its reverse (13031102321), we get a palindrome (25351215352).

The spelling of 12320113031 in words is "twelve billion, three hundred twenty million, one hundred thirteen thousand, thirty-one".

Divisors: 1 31 257 7967 1546393 47938183 397423001 12320113031