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1231310230 = 25472619809
BaseRepresentation
bin100100101100100…
…0100110110010110
310011210221001002121
41021121010312112
510010203411410
6322103130154
742340651513
oct11131046626
93153831077
101231310230
11582051667
122a444395a
13168137947
14b976030a
15731729da
hex49644d96

1231310230 has 16 divisors (see below), whose sum is σ = 2263515840. Its totient is φ = 482044672.

The previous prime is 1231310209. The next prime is 1231310231. The reversal of 1231310230 is 320131321.

It is a super-3 number, since 3×12313102303 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231310231) 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, 1309435 + ... + 1310374.

It is an arithmetic number, because the mean of its divisors is an integer number (141469740).

Almost surely, 21231310230 is an apocalyptic number.

1231310230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231310230 is a deficient number, since it is larger than the sum of its proper divisors (1032205610).

1231310230 is a wasteful number, since it uses less digits than its factorization.

1231310230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619863.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231310230 is about 35090.0303505141. The cubic root of 1231310230 is about 1071.8215776371.

Adding to 1231310230 its reverse (320131321), we get a palindrome (1551441551).

The spelling of 1231310230 in words is "one billion, two hundred thirty-one million, three hundred ten thousand, two hundred thirty".

Divisors: 1 2 5 10 47 94 235 470 2619809 5239618 13099045 26198090 123131023 246262046 615655115 1231310230