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130131077 = 131993367
BaseRepresentation
bin1111100000110…
…10010010000101
3100001212100021112
413300122102011
5231303143302
620525054405
73140044616
oct760322205
9301770245
10130131077
116750144a
12376b7405
1320c6334b
14133d5c0d
15b657552
hex7c1a485

130131077 has 4 divisors (see below), whose sum is σ = 131124576. Its totient is φ = 129137580.

The previous prime is 130131061. The next prime is 130131103. The reversal of 130131077 is 770131031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130131077 - 24 = 130131061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130131017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496553 + ... + 496814.

It is an arithmetic number, because the mean of its divisors is an integer number (32781144).

Almost surely, 2130131077 is an apocalyptic number.

It is an amenable number.

130131077 is a deficient number, since it is larger than the sum of its proper divisors (993499).

130131077 is an equidigital number, since it uses as much as digits as its factorization.

130131077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993498.

The product of its (nonzero) digits is 441, while the sum is 23.

The square root of 130131077 is about 11407.5009094893. The cubic root of 130131077 is about 506.7499035590.

The spelling of 130131077 in words is "one hundred thirty million, one hundred thirty-one thousand, seventy-seven".

Divisors: 1 131 993367 130131077