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1030103131 = 9371099363
BaseRepresentation
bin111101011001100…
…010000001011011
32122210022122211211
4331121202001123
54102201300011
6250114403551
734345506061
oct7531420133
92583278754
101030103131
11489514802
12248b905b7
1313554a0a5
149ab46031
156067ab21
hex3d66205b

1030103131 has 4 divisors (see below), whose sum is σ = 1031203432. Its totient is φ = 1029002832.

The previous prime is 1030103111. The next prime is 1030103149. The reversal of 1030103131 is 1313010301.

It is a happy number.

1030103131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1030103131 - 25 = 1030103099 is a prime.

It is a super-2 number, since 2×10301031312 = 2122224920992006322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1030103111) 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, 548745 + ... + 550618.

It is an arithmetic number, because the mean of its divisors is an integer number (257800858).

Almost surely, 21030103131 is an apocalyptic number.

1030103131 is a deficient number, since it is larger than the sum of its proper divisors (1100301).

1030103131 is an equidigital number, since it uses as much as digits as its factorization.

1030103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100300.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1030103131 is about 32095.2197531034. The cubic root of 1030103131 is about 1009.9353391275.

Adding to 1030103131 its reverse (1313010301), we get a palindrome (2343113432).

The spelling of 1030103131 in words is "one billion, thirty million, one hundred three thousand, one hundred thirty-one".

Divisors: 1 937 1099363 1030103131