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131428154 = 211131572927
BaseRepresentation
bin1111101010101…
…10111100111010
3100011022020112102
413311112330322
5232121200104
621012543402
73154056314
oct765267472
9304266472
10131428154
1168207a10
1238021b62
13212c8850
14136527b4
15b811a1e
hex7d56f3a

131428154 has 32 divisors (see below), whose sum is σ = 233162496. Its totient is φ = 54774720.

The previous prime is 131428147. The next prime is 131428159. The reversal of 131428154 is 451824131.

It is not an unprimeable number, because it can be changed into a prime (131428159) 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, 43439 + ... + 46365.

It is an arithmetic number, because the mean of its divisors is an integer number (7286328).

Almost surely, 2131428154 is an apocalyptic number.

131428154 is a deficient number, since it is larger than the sum of its proper divisors (101734342).

131428154 is a wasteful number, since it uses less digits than its factorization.

131428154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110.

The product of its digits is 3840, while the sum is 29.

The square root of 131428154 is about 11464.2118787119. The cubic root of 131428154 is about 508.4280110551.

The spelling of 131428154 in words is "one hundred thirty-one million, four hundred twenty-eight thousand, one hundred fifty-four".

Divisors: 1 2 11 13 22 26 143 157 286 314 1727 2041 2927 3454 4082 5854 22451 32197 38051 44902 64394 76102 418561 459539 837122 919078 5054929 5974007 10109858 11948014 65714077 131428154