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2131230230 = 25523407501
BaseRepresentation
bin111111100000111…
…1111111000010110
312111112021201020222
41333001333320112
513331043331410
6551251354342
7103546105133
oct17701777026
95445251228
102131230230
119a40298a8
124b58b29b2
1327c703a9c
1416309958a
15c7185955
hex7f07fe16

2131230230 has 16 divisors (see below), whose sum is σ = 3843558864. Its totient is φ = 850860000.

The previous prime is 2131230221. The next prime is 2131230349. The reversal of 2131230230 is 320321312.

It is a super-3 number, since 3×21312302303 (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131230199 and 2131230208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198521 + ... + 208980.

It is an arithmetic number, because the mean of its divisors is an integer number (240222429).

Almost surely, 22131230230 is an apocalyptic number.

2131230230 is a deficient number, since it is larger than the sum of its proper divisors (1712328634).

2131230230 is a wasteful number, since it uses less digits than its factorization.

2131230230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408031.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2131230230 is about 46165.2491599471. The cubic root of 2131230230 is about 1286.8960145660.

Adding to 2131230230 its reverse (320321312), we get a palindrome (2451551542).

The spelling of 2131230230 in words is "two billion, one hundred thirty-one million, two hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 10 523 1046 2615 5230 407501 815002 2037505 4075010 213123023 426246046 1065615115 2131230230