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1230232331 = 28110094339
BaseRepresentation
bin100100101010011…
…1101101100001011
310011201220021111102
41021110331230023
510004414413311
6322024052015
742325542116
oct11124755413
93151807442
101230232331
11581485839
122a400400b
13167b4b133
14b955d57d
157300d43b
hex4953db0b

1230232331 has 8 divisors (see below), whose sum is σ = 1236118800. Its totient is φ = 1224357120.

The previous prime is 1230232321. The next prime is 1230232361. The reversal of 1230232331 is 1332320321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230232331 is a prime.

It is a super-2 number, since 2×12302323312 = 3026943176475387122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230232301) 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, 281360 + ... + 285698.

It is an arithmetic number, because the mean of its divisors is an integer number (154514850).

Almost surely, 21230232331 is an apocalyptic number.

1230232331 is a deficient number, since it is larger than the sum of its proper divisors (5886469).

1230232331 is a wasteful number, since it uses less digits than its factorization.

1230232331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5629.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1230232331 is about 35074.6679385565. The cubic root of 1230232331 is about 1071.5087258832.

Adding to 1230232331 its reverse (1332320321), we get a palindrome (2562552652).

The spelling of 1230232331 in words is "one billion, two hundred thirty million, two hundred thirty-two thousand, three hundred thirty-one".

Divisors: 1 281 1009 4339 283529 1219259 4378051 1230232331