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402130311 = 31121107797
BaseRepresentation
bin10111111110000…
…000010110000111
31001000200100002020
4113332000112013
51310421132221
6103523014223
712652023402
oct2776002607
91030610066
10402130311
11196aa0500
12b280a373
136540913b
143b59ad39
1525484ac6
hex17f80587

402130311 has 12 divisors (see below), whose sum is σ = 589348536. Its totient is φ = 243715120.

The previous prime is 402130301. The next prime is 402130331. The reversal of 402130311 is 113031204.

It is not a de Polignac number, because 402130311 - 25 = 402130279 is a prime.

It is a super-3 number, since 3×4021303113 (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402130301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 553536 + ... + 554261.

It is an arithmetic number, because the mean of its divisors is an integer number (49112378).

Almost surely, 2402130311 is an apocalyptic number.

402130311 is a deficient number, since it is larger than the sum of its proper divisors (187218225).

402130311 is a wasteful number, since it uses less digits than its factorization.

402130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107822 (or 1107811 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 402130311 is about 20053.1870534337. The cubic root of 402130311 is about 738.1120066336.

Adding to 402130311 its reverse (113031204), we get a palindrome (515161515).

The spelling of 402130311 in words is "four hundred two million, one hundred thirty thousand, three hundred eleven".

Divisors: 1 3 11 33 121 363 1107797 3323391 12185767 36557301 134043437 402130311