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13031230230103 = 19685854222637
BaseRepresentation
bin1011110110100001000111…
…0110010100111001010111
31201010202212211200121002111
42331220101312110321113
53202000424414330403
643414244200451451
72513322014233051
oct275502166247127
951122784617074
1013031230230103
114174571817918
121565658779b87
13736abbb9a607
14330a019cc8d1
15178e8b2bd56d
hexbda11d94e57

13031230230103 has 4 divisors (see below), whose sum is σ = 13717084452760. Its totient is φ = 12345376007448.

The previous prime is 13031230230091. The next prime is 13031230230113. The reversal of 13031230230103 is 30103203213031.

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 13031230230103 - 229 = 13030693359191 is a prime.

It is a super-2 number, since 2×130312302301032 (a number of 27 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 (13031230230113) 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, 342927111300 + ... + 342927111337.

It is an arithmetic number, because the mean of its divisors is an integer number (3429271113190).

Almost surely, 213031230230103 is an apocalyptic number.

13031230230103 is a deficient number, since it is larger than the sum of its proper divisors (685854222657).

13031230230103 is an equidigital number, since it uses as much as digits as its factorization.

13031230230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685854222656.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 13031230230103 its reverse (30103203213031), we get a palindrome (43134433443134).

The spelling of 13031230230103 in words is "thirteen trillion, thirty-one billion, two hundred thirty million, two hundred thirty thousand, one hundred three".

Divisors: 1 19 685854222637 13031230230103