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231342552 = 23327459013
BaseRepresentation
bin11011100101000…
…00000111011000
3121010022102022200
431302200013120
5433210430202
634542250200
75506244040
oct1562400730
9533272280
10231342552
111096500a1
1265586960
1338c0c3ac
1422a20720
151549ae1c
hexdca01d8

231342552 has 48 divisors (see below), whose sum is σ = 716061840. Its totient is φ = 66097728.

The previous prime is 231342539. The next prime is 231342557. The reversal of 231342552 is 255243132.

It is a happy number.

231342552 is a `hidden beast` number, since 231 + 3 + 425 + 5 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231342557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229003 + ... + 230010.

It is an arithmetic number, because the mean of its divisors is an integer number (14917955).

Almost surely, 2231342552 is an apocalyptic number.

It is an amenable number.

231342552 is an abundant number, since it is smaller than the sum of its proper divisors (484719288).

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

231342552 is a wasteful number, since it uses less digits than its factorization.

231342552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459032 (or 459025 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 231342552 is about 15209.9491123409. The cubic root of 231342552 is about 613.8823882500.

Adding to 231342552 its reverse (255243132), we get a palindrome (486585684).

The spelling of 231342552 in words is "two hundred thirty-one million, three hundred forty-two thousand, five hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 56 63 72 84 126 168 252 504 459013 918026 1377039 1836052 2754078 3213091 3672104 4131117 5508156 6426182 8262234 9639273 11016312 12852364 16524468 19278546 25704728 28917819 33048936 38557092 57835638 77114184 115671276 231342552