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131026075 = 525241043
BaseRepresentation
bin1111100111101…
…00110010011011
3100010112210222121
413303310302123
5232020313300
621000202111
73150463135
oct763646233
9303483877
10131026075
1167a62914
1237a69337
13211b782b
141358a055
15b78281a
hex7cf4c9b

131026075 has 6 divisors (see below), whose sum is σ = 162472364. Its totient is φ = 104820840.

The previous prime is 131025977. The next prime is 131026087. The reversal of 131026075 is 570620131.

It is a de Polignac number, because none of the positive numbers 2k-131026075 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5241043 = 131026075 / (1 + 3 + 1 + 0 + 2 + 6 + 0 + 7 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2620497 + ... + 2620546.

Almost surely, 2131026075 is an apocalyptic number.

131026075 is a deficient number, since it is larger than the sum of its proper divisors (31446289).

131026075 is an equidigital number, since it uses as much as digits as its factorization.

131026075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241053 (or 5241048 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 131026075 is about 11446.6621772463. The cubic root of 131026075 is about 507.9090023937.

The spelling of 131026075 in words is "one hundred thirty-one million, twenty-six thousand, seventy-five".

Divisors: 1 5 25 5241043 26205215 131026075