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2132731 = 19112249
BaseRepresentation
bin1000001000101011111011
311000100120001
420020223323
51021221411
6113413431
724061606
oct10105373
94010501
102132731
111227397
1286a277
13598993
143d733d
152c1dc1
hex208afb

2132731 has 4 divisors (see below), whose sum is σ = 2245000. Its totient is φ = 2020464.

The previous prime is 2132699. The next prime is 2132749. The reversal of 2132731 is 1372312.

2132731 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 2132731 - 25 = 2132699 is a prime.

It is a super-2 number, since 2×21327312 = 9097083036722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 112249 = 2132731 / (2 + 1 + 3 + 2 + 7 + 3 + 1).

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2132699 and 2132708.

It is not an unprimeable number, because it can be changed into a prime (2132761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56106 + ... + 56143.

It is an arithmetic number, because the mean of its divisors is an integer number (561250).

22132731 is an apocalyptic number.

2132731 is a deficient number, since it is larger than the sum of its proper divisors (112269).

2132731 is a wasteful number, since it uses less digits than its factorization.

2132731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112268.

The product of its digits is 252, while the sum is 19.

The square root of 2132731 is about 1460.3872774028. The cubic root of 2132731 is about 128.7198012562.

The spelling of 2132731 in words is "two million, one hundred thirty-two thousand, seven hundred thirty-one".

Divisors: 1 19 112249 2132731