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13223100331 = 719113879839
BaseRepresentation
bin11000101000010100…
…00111111110101011
31021010112121002120201
430110022013332223
5204040103202311
610024040533031
7645452332630
oct142412077653
937115532521
1013223100331
115676105aa1
122690481177
13132968662c
148d6242187
15525d209c1
hex314287fab

13223100331 has 16 divisors (see below), whose sum is σ = 16048281600. Its totient is φ = 10642520448.

The previous prime is 13223100239. The next prime is 13223100337. The reversal of 13223100331 is 13300132231.

It is not a de Polignac number, because 13223100331 - 27 = 13223100203 is a prime.

It is a super-2 number, since 2×132231003312 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 13223100299 and 13223100308.

It is not an unprimeable number, because it can be changed into a prime (13223100337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424891 + ... + 454948.

It is an arithmetic number, because the mean of its divisors is an integer number (1003017600).

Almost surely, 213223100331 is an apocalyptic number.

13223100331 is a deficient number, since it is larger than the sum of its proper divisors (2825181269).

13223100331 is a wasteful number, since it uses less digits than its factorization.

13223100331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879978.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13223100331 its reverse (13300132231), we get a palindrome (26523232562).

The spelling of 13223100331 in words is "thirteen billion, two hundred twenty-three million, one hundred thousand, three hundred thirty-one".

Divisors: 1 7 19 113 133 791 2147 15029 879839 6158873 16716941 99421807 117018587 695952649 1889014333 13223100331