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231323041442 = 21910955848151
BaseRepresentation
bin1101011101101111101…
…1010111111010100010
3211010002022010001112102
43113123323113322202
512242222144311232
6254133543330402
722466254260353
oct3273373277242
9733068101472
10231323041442
118a11590a909
12389b9750a02
1318a76828b1c
14b2a6127d2a
15603d2e0662
hex35dbed7ea2

231323041442 has 16 divisors (see below), whose sum is σ = 368597803200. Its totient is φ = 108568803600.

The previous prime is 231323041409. The next prime is 231323041447. The reversal of 231323041442 is 244140323132.

It is not an unprimeable number, because it can be changed into a prime (231323041447) 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, 27919934 + ... + 27928217.

It is an arithmetic number, because the mean of its divisors is an integer number (23037362700).

Almost surely, 2231323041442 is an apocalyptic number.

231323041442 is a deficient number, since it is larger than the sum of its proper divisors (137274761758).

231323041442 is a wasteful number, since it uses less digits than its factorization.

231323041442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55848281.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 231323041442 its reverse (244140323132), we get a palindrome (475463364574).

The spelling of 231323041442 in words is "two hundred thirty-one billion, three hundred twenty-three million, forty-one thousand, four hundred forty-two".

Divisors: 1 2 19 38 109 218 2071 4142 55848151 111696302 1061114869 2122229738 6087448459 12174896918 115661520721 231323041442