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131073634 = 21932411409
BaseRepresentation
bin1111101000000…
…00011001100010
3100010122020020001
413310000121202
5232023324014
621001210214
73151051606
oct764003142
9303566201
10131073634
1167a9561a
1237a9096a
1321203383
141359d506
15b791974
hex7d00662

131073634 has 16 divisors (see below), whose sum is σ = 198590040. Its totient is φ = 64880640.

The previous prime is 131073529. The next prime is 131073637. The reversal of 131073634 is 436370131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72505225 + 58568409 = 8515^2 + 7653^2 .

It is not an unprimeable number, because it can be changed into a prime (131073637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92322 + ... + 93730.

Almost surely, 2131073634 is an apocalyptic number.

131073634 is a deficient number, since it is larger than the sum of its proper divisors (67516406).

131073634 is a wasteful number, since it uses less digits than its factorization.

131073634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 131073634 is about 11448.7394065897. The cubic root of 131073634 is about 507.9704474717.

The spelling of 131073634 in words is "one hundred thirty-one million, seventy-three thousand, six hundred thirty-four".

Divisors: 1 2 193 241 386 482 1409 2818 46513 93026 271937 339569 543874 679138 65536817 131073634