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12798717031 = 53814729641
BaseRepresentation
bin10111110101101110…
…01110110001100111
31020000222001012010201
423322313032301213
5202202432421111
65514000531331
7632110204552
oct137267166147
936028035121
1012798717031
1154785a65a1
122592320b47
13128c788759
14895b31699
154ed9426c1
hex2fadcec67

12798717031 has 8 divisors (see below), whose sum is σ = 13042242864. Its totient is φ = 12555266880.

The previous prime is 12798717023. The next prime is 12798717049. The reversal of 12798717031 is 13071789721.

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 12798717031 - 23 = 12798717023 is a prime.

It is a super-2 number, since 2×127987170312 (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 (12798717731) 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, 416971 + ... + 446611.

It is an arithmetic number, because the mean of its divisors is an integer number (1630280358).

Almost surely, 212798717031 is an apocalyptic number.

12798717031 is a deficient number, since it is larger than the sum of its proper divisors (243525833).

12798717031 is an equidigital number, since it uses as much as digits as its factorization.

12798717031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37841.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 12798717031 in words is "twelve billion, seven hundred ninety-eight million, seven hundred seventeen thousand, thirty-one".

Divisors: 1 53 8147 29641 431791 1570973 241485227 12798717031