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231244044 = 223157122741
BaseRepresentation
bin11011100100010…
…00000100001100
3121010010102012020
431302020010030
5433144302134
634540210140
75505353613
oct1562100414
9533112166
10231244044
11109593089
1265539950
1338ba65c5
14229d687a
151547bb49
hexdc8810c

231244044 has 24 divisors (see below), whose sum is σ = 543010608. Its totient is φ = 76589760.

The previous prime is 231244037. The next prime is 231244051. The reversal of 231244044 is 440442132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231244037) and next prime (231244051).

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, 59487 + ... + 63254.

It is an arithmetic number, because the mean of its divisors is an integer number (22625442).

Almost surely, 2231244044 is an apocalyptic number.

It is an amenable number.

231244044 is an abundant number, since it is smaller than the sum of its proper divisors (311766564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231244044 is a wasteful number, since it uses less digits than its factorization.

231244044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122905 (or 122903 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 231244044 is about 15206.7104924109. The cubic root of 231244044 is about 613.7952434352.

Adding to 231244044 its reverse (440442132), we get a palindrome (671686176).

The spelling of 231244044 in words is "two hundred thirty-one million, two hundred forty-four thousand, forty-four".

Divisors: 1 2 3 4 6 12 157 314 471 628 942 1884 122741 245482 368223 490964 736446 1472892 19270337 38540674 57811011 77081348 115622022 231244044