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131203313211 = 3631169340939
BaseRepresentation
bin111101000110001010…
…0111010111000111011
3110112122210011220000210
41322030110322320323
54122201022010321
6140135102202203
712323224522065
oct1721424727073
9415583156023
10131203313211
1150708939163
1221517883363
13c4ac289099
1464c921c735
15362d805b76
hex1e8c53ae3b

131203313211 has 16 divisors (see below), whose sum is σ = 175322766080. Its totient is φ = 87276540960.

The previous prime is 131203313173. The next prime is 131203313239. The reversal of 131203313211 is 112313302131.

It is a happy number.

It is not a de Polignac number, because 131203313211 - 27 = 131203313083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131203312211) 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, 3184380 + ... + 3225318.

It is an arithmetic number, because the mean of its divisors is an integer number (10957672880).

Almost surely, 2131203313211 is an apocalyptic number.

131203313211 is a deficient number, since it is larger than the sum of its proper divisors (44119452869).

131203313211 is a wasteful number, since it uses less digits than its factorization.

131203313211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43266.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131203313211 its reverse (112313302131), we get a palindrome (243516615342).

The spelling of 131203313211 in words is "one hundred thirty-one billion, two hundred three million, three hundred thirteen thousand, two hundred eleven".

Divisors: 1 3 631 1693 1893 5079 40939 122817 1068283 3204849 25832509 69309727 77497527 207929181 43734437737 131203313211