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131001461 = 719831877
BaseRepresentation
bin1111100111011…
…10110001110101
3100010111120012222
413303232301311
5232014021321
620555452125
73150331313
oct763566165
9303446188
10131001461
1167a46378
1237a57045
13211a9576
14135810b3
15b77a3ab
hex7ceec75

131001461 has 8 divisors (see below), whose sum is σ = 133052544. Its totient is φ = 128956240.

The previous prime is 131001433. The next prime is 131001463. The reversal of 131001461 is 164100131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131001461 - 210 = 131000437 is a prime.

It is a super-2 number, since 2×1310014612 = 34322765568269042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68855 + ... + 70731.

It is an arithmetic number, because the mean of its divisors is an integer number (16631568).

Almost surely, 2131001461 is an apocalyptic number.

It is an amenable number.

131001461 is a deficient number, since it is larger than the sum of its proper divisors (2051083).

131001461 is an equidigital number, since it uses as much as digits as its factorization.

131001461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 131001461 is about 11445.5869661630. The cubic root of 131001461 is about 507.8771958618.

Adding to 131001461 its reverse (164100131), we get a palindrome (295101592).

The spelling of 131001461 in words is "one hundred thirty-one million, one thousand, four hundred sixty-one".

Divisors: 1 71 983 1877 69793 133267 1845091 131001461