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131045401 = 17311671489
BaseRepresentation
bin1111100111110…
…01100000011001
3100010120210111101
413303321200121
5232021423101
621000431401
73150603364
oct763714031
9303523441
10131045401
1167a76393
1237a78561
13211c3576
14135930db
15b788401
hex7cf9819

131045401 has 16 divisors (see below), whose sum is σ = 144184320. Its totient is φ = 118563840.

The previous prime is 131045377. The next prime is 131045417. The reversal of 131045401 is 104540131.

It is not a de Polignac number, because 131045401 - 225 = 97490969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131045441) 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, 87265 + ... + 88753.

It is an arithmetic number, because the mean of its divisors is an integer number (9011520).

Almost surely, 2131045401 is an apocalyptic number.

It is an amenable number.

131045401 is a deficient number, since it is larger than the sum of its proper divisors (13138919).

131045401 is a wasteful number, since it uses less digits than its factorization.

131045401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 131045401 is about 11447.5063223394. The cubic root of 131045401 is about 507.9339729115.

Adding to 131045401 its reverse (104540131), we get a palindrome (235585532).

The spelling of 131045401 in words is "one hundred thirty-one million, forty-five thousand, four hundred one".

Divisors: 1 17 31 167 527 1489 2839 5177 25313 46159 88009 248663 784703 4227271 7708553 131045401