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13133213031 = 317257513981
BaseRepresentation
bin11000011101100110…
…01110110101100111
31020220021110100101110
430032303032311213
5203344100304111
610011110200103
7643311316551
oct141663166547
936807410343
1013133213031
11562a3a1374
122666353033
131313b73a93
148c83244d1
1551ceb75a6
hex30ecced67

13133213031 has 8 divisors (see below), whose sum is σ = 18541006704. Its totient is φ = 8240447360.

The previous prime is 13133213021. The next prime is 13133213059. The reversal of 13133213031 is 13031233131.

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 13133213031 - 27 = 13133212903 is a prime.

It is a super-2 number, since 2×131332130312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13133212989 and 13133213007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133213021) 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, 128756940 + ... + 128757041.

It is an arithmetic number, because the mean of its divisors is an integer number (2317625838).

Almost surely, 213133213031 is an apocalyptic number.

13133213031 is a deficient number, since it is larger than the sum of its proper divisors (5407793673).

13133213031 is a wasteful number, since it uses less digits than its factorization.

13133213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257514001.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 13133213031 its reverse (13031233131), we get a palindrome (26164446162).

The spelling of 13133213031 in words is "thirteen billion, one hundred thirty-three million, two hundred thirteen thousand, thirty-one".

Divisors: 1 3 17 51 257513981 772541943 4377737677 13133213031