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2130331 = 72711123
BaseRepresentation
bin1000001000000110011011
311000020021011
420020012123
51021132311
6113354351
724051610
oct10100633
94006234
102130331
111225605
128689b7
13597868
143d6507
152c1321
hex20819b

2130331 has 8 divisors (see below), whose sum is σ = 2445824. Its totient is φ = 1817640.

The previous prime is 2130307. The next prime is 2130341. The reversal of 2130331 is 1330312.

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 2130331 - 29 = 2129819 is a prime.

It is a super-2 number, since 2×21303312 = 9076620339122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130341) 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, 1336 + ... + 2458.

It is an arithmetic number, because the mean of its divisors is an integer number (305728).

22130331 is an apocalyptic number.

2130331 is a deficient number, since it is larger than the sum of its proper divisors (315493).

2130331 is a wasteful number, since it uses less digits than its factorization.

2130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 2130331 is about 1459.5653462589. The cubic root of 2130331 is about 128.6714995754.

Adding to 2130331 its reverse (1330312), we get a palindrome (3460643).

The spelling of 2130331 in words is "two million, one hundred thirty thousand, three hundred thirty-one".

Divisors: 1 7 271 1123 1897 7861 304333 2130331