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130981031 is a prime number
BaseRepresentation
bin1111100111010…
…01110010100111
3100010110112012022
413303221302213
5232012343111
620555213355
73150214616
oct763516247
9303415168
10130981031
1167a31a95
1237a4725b
13211a018c
141357787d
15b7742db
hex7ce9ca7

130981031 has 2 divisors, whose sum is σ = 130981032. Its totient is φ = 130981030.

The previous prime is 130981009. The next prime is 130981051. The reversal of 130981031 is 130189031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 130981031 - 222 = 126786727 is a prime.

It is a super-2 number, since 2×1309810312 = 34312060963645922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130981051) by changing a digit.

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 as a sum of consecutive naturals, namely, 65490515 + 65490516.

It is an arithmetic number, because the mean of its divisors is an integer number (65490516).

Almost surely, 2130981031 is an apocalyptic number.

130981031 is a deficient number, since it is larger than the sum of its proper divisors (1).

130981031 is an equidigital number, since it uses as much as digits as its factorization.

130981031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 130981031 is about 11444.6944476469. The cubic root of 130981031 is about 507.8507929233.

The spelling of 130981031 in words is "one hundred thirty million, nine hundred eighty-one thousand, thirty-one".