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130481431 = 355736683
BaseRepresentation
bin1111100011011…
…11110100010111
3100002112010212121
413301233310113
5231400401211
620540400411
73143034223
oct761576427
9302463777
10130481431
11677206a3
1237846107
1321056962
1413487783
15b6c6271
hex7c6fd17

130481431 has 4 divisors (see below), whose sum is σ = 130521672. Its totient is φ = 130441192.

The previous prime is 130481419. The next prime is 130481437. The reversal of 130481431 is 134184031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130481431 - 25 = 130481399 is a prime.

It is a super-2 number, since 2×1304814312 = 34050807671615522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130481396 and 130481405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130481437) 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, 14785 + ... + 21898.

It is an arithmetic number, because the mean of its divisors is an integer number (32630418).

Almost surely, 2130481431 is an apocalyptic number.

130481431 is a deficient number, since it is larger than the sum of its proper divisors (40241).

130481431 is an equidigital number, since it uses as much as digits as its factorization.

130481431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40240.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 130481431 is about 11422.8468868317. The cubic root of 130481431 is about 507.2042730167.

The spelling of 130481431 in words is "one hundred thirty million, four hundred eighty-one thousand, four hundred thirty-one".

Divisors: 1 3557 36683 130481431