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131430201 = 3721947057
BaseRepresentation
bin1111101010101…
…11011100111001
3100011022100100020
413311113130321
5232121231301
621013001053
73154065300
oct765273471
9304270306
10131430201
1168209501
1238023189
13212c9766
1413653437
15b812436
hex7d57739

131430201 has 24 divisors (see below), whose sum is σ = 214584480. Its totient is φ = 71148672.

The previous prime is 131430197. The next prime is 131430203. The reversal of 131430201 is 102034131.

It is not a de Polignac number, because 131430201 - 22 = 131430197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131430203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20736 + ... + 26321.

It is an arithmetic number, because the mean of its divisors is an integer number (8941020).

Almost surely, 2131430201 is an apocalyptic number.

It is an amenable number.

131430201 is a deficient number, since it is larger than the sum of its proper divisors (83154279).

131430201 is a wasteful number, since it uses less digits than its factorization.

131430201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47093 (or 47086 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131430201 is about 11464.3011561979. The cubic root of 131430201 is about 508.4306506385.

Adding to 131430201 its reverse (102034131), we get a palindrome (233464332).

The spelling of 131430201 in words is "one hundred thirty-one million, four hundred thirty thousand, two hundred one".

Divisors: 1 3 7 19 21 49 57 133 147 399 931 2793 47057 141171 329399 894083 988197 2305793 2682249 6258581 6917379 18775743 43810067 131430201