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131430316 = 2232857579
BaseRepresentation
bin1111101010101…
…11011110101100
3100011022100111111
413311113132230
5232121232231
621013001404
73154065523
oct765273654
9304270444
10131430316
11682095a6
1238023264
13212c9824
14136534ba
15b8124b1
hex7d577ac

131430316 has 6 divisors (see below), whose sum is σ = 230003060. Its totient is φ = 65715156.

The previous prime is 131430289. The next prime is 131430319. The reversal of 131430316 is 613034131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131430319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16428786 + ... + 16428793.

Almost surely, 2131430316 is an apocalyptic number.

It is an amenable number.

131430316 is a deficient number, since it is larger than the sum of its proper divisors (98572744).

131430316 is a wasteful number, since it uses less digits than its factorization.

131430316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32857583 (or 32857581 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 131430316 is about 11464.3061717663. The cubic root of 131430316 is about 508.4307989289.

Adding to 131430316 its reverse (613034131), we get a palindrome (744464447).

The spelling of 131430316 in words is "one hundred thirty-one million, four hundred thirty thousand, three hundred sixteen".

Divisors: 1 2 4 32857579 65715158 131430316