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11131906 = 217327409
BaseRepresentation
bin101010011101…
…110000000010
3202221120002211
4222131300002
510322210111
61034332334
7163422352
oct52356002
922846084
1011131906
116313625
12388a0aa
1323c9b36
14169ab62
15e9d521
hexa9dc02

11131906 has 8 divisors (see below), whose sum is σ = 17680140. Its totient is φ = 5238528.

The previous prime is 11131873. The next prime is 11131907. The reversal of 11131906 is 60913111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8439025 + 2692881 = 2905^2 + 1641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11131907) 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, 163671 + ... + 163738.

Almost surely, 211131906 is an apocalyptic number.

11131906 is a deficient number, since it is larger than the sum of its proper divisors (6548234).

11131906 is a wasteful number, since it uses less digits than its factorization.

11131906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327428.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 11131906 is about 3336.4511085883. The cubic root of 11131906 is about 223.2834377780.

The spelling of 11131906 in words is "eleven million, one hundred thirty-one thousand, nine hundred six".

Divisors: 1 2 17 34 327409 654818 5565953 11131906