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40130311 = 133783431
BaseRepresentation
bin1001100100010…
…1011100000111
32210111211102211
42121011130013
540233132221
63552044251
7665046664
oct231053407
983454384
1040130311
112071a551
1211533687
138410c60
145488a6b
1537ca6e1
hex2645707

40130311 has 8 divisors (see below), whose sum is σ = 44385824. Its totient is φ = 36041760.

The previous prime is 40130281. The next prime is 40130323. The reversal of 40130311 is 11303104.

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

It is a cyclic number.

It is not a de Polignac number, because 40130311 - 29 = 40129799 is a prime.

It is a super-2 number, since 2×401303112 = 3220883721913442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40130291 and 40130300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40130371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41235 + ... + 42196.

It is an arithmetic number, because the mean of its divisors is an integer number (5548228).

Almost surely, 240130311 is an apocalyptic number.

40130311 is a deficient number, since it is larger than the sum of its proper divisors (4255513).

40130311 is a wasteful number, since it uses less digits than its factorization.

40130311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83481.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 40130311 is about 6334.8489326897. The cubic root of 40130311 is about 342.3661678976.

Adding to 40130311 its reverse (11303104), we get a palindrome (51433415).

The spelling of 40130311 in words is "forty million, one hundred thirty thousand, three hundred eleven".

Divisors: 1 13 37 481 83431 1084603 3086947 40130311