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131148066 = 23715719889
BaseRepresentation
bin1111101000100…
…10100100100010
3100010210000022210
413310102210202
5232033214231
621002542550
73151511610
oct764224442
9303700283
10131148066
1168036535
1237b07a56
132122b20a
14135bc6b0
15b7a8a46
hex7d12922

131148066 has 32 divisors (see below), whose sum is σ = 301691520. Its totient is φ = 37230336.

The previous prime is 131147993. The next prime is 131148067. The reversal of 131148066 is 660841131.

It is not an unprimeable number, because it can be changed into a prime (131148067) 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, 3351 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (9427860).

Almost surely, 2131148066 is an apocalyptic number.

131148066 is an abundant number, since it is smaller than the sum of its proper divisors (170543454).

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

131148066 is a wasteful number, since it uses less digits than its factorization.

131148066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20058.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 131148066 is about 11451.9896087972. The cubic root of 131148066 is about 508.0665819894.

Adding to 131148066 its reverse (660841131), we get a palindrome (791989197).

The spelling of 131148066 in words is "one hundred thirty-one million, one hundred forty-eight thousand, sixty-six".

Divisors: 1 2 3 6 7 14 21 42 157 314 471 942 1099 2198 3297 6594 19889 39778 59667 119334 139223 278446 417669 835338 3122573 6245146 9367719 18735438 21858011 43716022 65574033 131148066