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13315345031 = 67317626929
BaseRepresentation
bin11000110011010100…
…00000101010000111
31021100222011121112002
430121222000222013
5204232212020111
610041134015515
7650652364622
oct143152005207
937328147462
1013315345031
11571318a88a
1226b734759b
1313428131b1
149045b4db9
1552de9263b
hex319a80a87

13315345031 has 8 divisors (see below), whose sum is σ = 13556734320. Its totient is φ = 13075210368.

The previous prime is 13315345003. The next prime is 13315345037. The reversal of 13315345031 is 13054351331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13315345031 is a prime.

It is a super-2 number, since 2×133153450312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13315344985 and 13315345003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315345037) 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, 292226 + ... + 334703.

It is an arithmetic number, because the mean of its divisors is an integer number (1694591790).

Almost surely, 213315345031 is an apocalyptic number.

13315345031 is a deficient number, since it is larger than the sum of its proper divisors (241389289).

13315345031 is an equidigital number, since it uses as much as digits as its factorization.

13315345031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627313.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 13315345031 its reverse (13054351331), we get a palindrome (26369696362).

The spelling of 13315345031 in words is "thirteen billion, three hundred fifteen million, three hundred forty-five thousand, thirty-one".

Divisors: 1 67 317 21239 626929 42004243 198736493 13315345031