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131122312302 = 23115331695981
BaseRepresentation
bin111101000011101111…
…1111011010001101110
3110112110010202121200010
41322013133323101232
54122014302443202
6140123050114050
712321222156612
oct1720737732156
9415403677603
10131122312302
1150677143a63
12214b471b926
13c498568257
1464bc575342
15362665576c
hex1e877fb46e

131122312302 has 32 divisors (see below), whose sum is σ = 262598793120. Its totient is φ = 43648450560.

The previous prime is 131122312291. The next prime is 131122312313. The reversal of 131122312302 is 203213221131.

It is an interprime number because it is at equal distance from previous prime (131122312291) and next prime (131122312313).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21920152 + ... + 21926132.

It is an arithmetic number, because the mean of its divisors is an integer number (8206212285).

Almost surely, 2131122312302 is an apocalyptic number.

131122312302 is an abundant number, since it is smaller than the sum of its proper divisors (131476480818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131122312302 is a wasteful number, since it uses less digits than its factorization.

131122312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10308.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131122312302 its reverse (203213221131), we get a palindrome (334335533433).

The spelling of 131122312302 in words is "one hundred thirty-one billion, one hundred twenty-two million, three hundred twelve thousand, three hundred two".

Divisors: 1 2 3 6 1153 2306 3169 3459 5981 6338 6918 9507 11962 17943 19014 35886 3653857 6896093 7307714 10961571 13792186 18953789 20688279 21923142 37907578 41376558 56861367 113722734 21853718717 43707437434 65561156151 131122312302