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103131032011 = 726479413457
BaseRepresentation
bin110000000001100010…
…1101010100111001011
3100212012101020020201021
41200003011222213023
53142203021011021
6115213331533311
710310453210500
oct1400305524713
9325171206637
10103131032011
113a812862867
1217ba245a237
1399573b13c7
144dc4c154a7
152a39062c41
hex180316a9cb

103131032011 has 24 divisors (see below), whose sum is σ = 120316656096. Its totient is φ = 88142100480.

The previous prime is 103131032003. The next prime is 103131032023. The reversal of 103131032011 is 110230131301.

It is not a de Polignac number, because 103131032011 - 23 = 103131032003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103131032041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29830795 + ... + 29834251.

It is an arithmetic number, because the mean of its divisors is an integer number (5013194004).

Almost surely, 2103131032011 is an apocalyptic number.

103131032011 is a deficient number, since it is larger than the sum of its proper divisors (17185624085).

103131032011 is an equidigital number, since it uses as much as digits as its factorization.

103131032011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059 (or 5052 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 103131032011 its reverse (110230131301), we get a palindrome (213361163312).

The spelling of 103131032011 in words is "one hundred three billion, one hundred thirty-one million, thirty-two thousand, eleven".

Divisors: 1 7 49 647 941 3457 4529 6587 24199 31703 46109 169393 608827 2236679 3253037 4261789 15656753 22771259 29832523 109597271 159398813 2104714939 14733004573 103131032011