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1031132131 = 4323979817
BaseRepresentation
bin111101011101011…
…101001111100011
32122212020221100221
4331131131033203
54102432212011
6250152423511
734360323061
oct7535351743
92585227327
101031132131
1148a057917
122493a7b97
1313581a573
149ad33031
15607d0971
hex3d75d3e3

1031132131 has 4 divisors (see below), whose sum is σ = 1055111992. Its totient is φ = 1007152272.

The previous prime is 1031132117. The next prime is 1031132171. The reversal of 1031132131 is 1312311301.

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 1031132131 - 25 = 1031132099 is a prime.

It is a super-2 number, since 2×10311321312 = 2126466943161202322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031132111) 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, 11989866 + ... + 11989951.

It is an arithmetic number, because the mean of its divisors is an integer number (263777998).

Almost surely, 21031132131 is an apocalyptic number.

1031132131 is a deficient number, since it is larger than the sum of its proper divisors (23979861).

1031132131 is an equidigital number, since it uses as much as digits as its factorization.

1031132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23979860.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1031132131 is about 32111.2461763788. The cubic root of 1031132131 is about 1010.2715118166.

Adding to 1031132131 its reverse (1312311301), we get a palindrome (2343443432).

The spelling of 1031132131 in words is "one billion, thirty-one million, one hundred thirty-two thousand, one hundred thirty-one".

Divisors: 1 43 23979817 1031132131