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13002232031 = 113111149521
BaseRepresentation
bin11000001101111111…
…00101000011011111
31020120010222211020022
430012333211003133
5203112032411111
65550110542355
7640131102005
oct140677450337
936503884208
1013002232031
11557246a408
12262a5079bb
1312c29a3929
148b4b8aa75
155117432db
hex306fe50df

13002232031 has 4 divisors (see below), whose sum is σ = 13003392864. Its totient is φ = 13001071200.

The previous prime is 13002232003. The next prime is 13002232037. The reversal of 13002232031 is 13023220031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13002232031 - 214 = 13002215647 is a prime.

It is a super-2 number, since 2×130022320312 (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 (13002232037) 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, 563450 + ... + 586071.

It is an arithmetic number, because the mean of its divisors is an integer number (3250848216).

Almost surely, 213002232031 is an apocalyptic number.

13002232031 is a deficient number, since it is larger than the sum of its proper divisors (1160833).

13002232031 is a wasteful number, since it uses less digits than its factorization.

13002232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160832.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13002232031 its reverse (13023220031), we get a palindrome (26025452062).

The spelling of 13002232031 in words is "thirteen billion, two million, two hundred thirty-two thousand, thirty-one".

Divisors: 1 11311 1149521 13002232031