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231541074 = 23212863393
BaseRepresentation
bin11011100110100…
…00100101010010
3121010200111122100
431303100211102
5433233303244
634550421230
75511031602
oct1563204522
9533614570
10231541074
11109776266
1265661816
1338c7b86b
1422a72c02
15154d9b69
hexdcd0952

231541074 has 12 divisors (see below), whose sum is σ = 501672366. Its totient is φ = 77180352.

The previous prime is 231541067. The next prime is 231541081. The reversal of 231541074 is 470145132.

It is an interprime number because it is at equal distance from previous prime (231541067) and next prime (231541081).

It can be written as a sum of positive squares in only one way, i.e., 189200025 + 42341049 = 13755^2 + 6507^2 .

It is a super-2 number, since 2×2315410742 = 107222537898146952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6431679 + ... + 6431714.

Almost surely, 2231541074 is an apocalyptic number.

231541074 is an abundant number, since it is smaller than the sum of its proper divisors (270131292).

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

231541074 is a wasteful number, since it uses less digits than its factorization.

231541074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863401 (or 12863398 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 231541074 is about 15216.4737702268. The cubic root of 231541074 is about 614.0579350242.

The spelling of 231541074 in words is "two hundred thirty-one million, five hundred forty-one thousand, seventy-four".

Divisors: 1 2 3 6 9 18 12863393 25726786 38590179 77180358 115770537 231541074