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BaseRepresentation
bin100001101101110…
…1001010101011111
32220211210001012121
41003123221111133
54304104230141
6304132043411
740015031665
oct10333512537
92824701177
101131320671
11530667a68
12276a63567
131504c8b20
14aa372c35
15694c11d1
hex436e955f

1131320671 has 4 divisors (see below), whose sum is σ = 1218345352. Its totient is φ = 1044295992.

The previous prime is 1131320623. The next prime is 1131320681. The reversal of 1131320671 is 1760231311.

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 1131320671 - 217 = 1131189599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131320611) 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, 43512321 + ... + 43512346.

It is an arithmetic number, because the mean of its divisors is an integer number (304586338).

Almost surely, 21131320671 is an apocalyptic number.

1131320671 is a deficient number, since it is larger than the sum of its proper divisors (87024681).

1131320671 is an equidigital number, since it uses as much as digits as its factorization.

1131320671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87024680.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1131320671 is about 33635.1106880890. The cubic root of 1131320671 is about 1041.9860566361.

Adding to 1131320671 its reverse (1760231311), we get a palindrome (2891551982).

The spelling of 1131320671 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, six hundred seventy-one".

Divisors: 1 13 87024667 1131320671