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231241272 = 23343224071
BaseRepresentation
bin11011100100001…
…11011000111000
3121010010021101120
431302013120320
5433144210042
634540145240
75505342543
oct1562073070
9533107346
10231241272
11109590a99
1265538220
1338ba5272
14229d585a
151547adec
hexdc87638

231241272 has 32 divisors (see below), whose sum is σ = 591550080. Its totient is φ = 75287520.

The previous prime is 231241247. The next prime is 231241291. The reversal of 231241272 is 272142132.

231241272 = T353 + T354 + ... + T1126.

231241272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 111004 + ... + 113067.

It is an arithmetic number, because the mean of its divisors is an integer number (18485940).

Almost surely, 2231241272 is an apocalyptic number.

It is an amenable number.

231241272 is an abundant number, since it is smaller than the sum of its proper divisors (360308808).

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

231241272 is a wasteful number, since it uses less digits than its factorization.

231241272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224123 (or 224119 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 231241272 is about 15206.6193481655. The cubic root of 231241272 is about 613.7927908355.

The spelling of 231241272 in words is "two hundred thirty-one million, two hundred forty-one thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 43 86 129 172 258 344 516 1032 224071 448142 672213 896284 1344426 1792568 2688852 5377704 9635053 19270106 28905159 38540212 57810318 77080424 115620636 231241272