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131123211330 = 23515727839323
BaseRepresentation
bin111101000011110001…
…1010110110001000010
3110112110012110021220110
41322013203112301002
54122020020230310
6140123121252150
712321232622646
oct1720743266102
9415405407813
10131123211330
11506776a8461
12214b4a94056
13c4987c1517
1464bc72ac26
153626781d20
hex1e878d6c42

131123211330 has 32 divisors (see below), whose sum is σ = 316700149824. Its totient is φ = 34743473856.

The previous prime is 131123211283. The next prime is 131123211371. The reversal of 131123211330 is 33112321131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131123211297 and 131123211306.

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, 13914952 + ... + 13924371.

It is an arithmetic number, because the mean of its divisors is an integer number (9896879682).

Almost surely, 2131123211330 is an apocalyptic number.

131123211330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131123211330 is an abundant number, since it is smaller than the sum of its proper divisors (185576938494).

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

131123211330 is a wasteful number, since it uses less digits than its factorization.

131123211330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27839490.

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

Adding to 131123211330 its reverse (33112321131), we get a palindrome (164235532461).

The spelling of 131123211330 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred eleven thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 157 314 471 785 942 1570 2355 4710 27839323 55678646 83517969 139196615 167035938 278393230 417589845 835179690 4370773711 8741547422 13112321133 21853868555 26224642266 43707737110 65561605665 131123211330