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1031000131 = 7247447677
BaseRepresentation
bin111101011100111…
…101000001000011
32122212000020022001
4331130331001003
54102414001011
6250145524431
734356233200
oct7534750103
92585006261
101031000131
11489a77727
12249343717
131357a2465
149acdaca7
15607a67c1
hex3d73d043

1031000131 has 12 divisors (see below), whose sum is σ = 1224847008. Its totient is φ = 864910032.

The previous prime is 1031000129. The next prime is 1031000167. The reversal of 1031000131 is 1310001301.

It is not a de Polignac number, because 1031000131 - 21 = 1031000129 is a prime.

It is a super-2 number, since 2×10310001312 = 2125922540244034322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1031004131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221536 + ... + 226141.

It is an arithmetic number, because the mean of its divisors is an integer number (102070584).

Almost surely, 21031000131 is an apocalyptic number.

1031000131 is a deficient number, since it is larger than the sum of its proper divisors (193846877).

1031000131 is an equidigital number, since it uses as much as digits as its factorization.

1031000131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447738 (or 447731 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 1031000131 is about 32109.1907559191. The cubic root of 1031000131 is about 1010.2284001318.

Adding to 1031000131 its reverse (1310001301), we get a palindrome (2341001432).

The spelling of 1031000131 in words is "one billion, thirty-one million, one hundred thirty-one", and thus it is an aban number.

Divisors: 1 7 47 49 329 2303 447677 3133739 21040819 21936173 147285733 1031000131